The Reef Indoor Water Park Visitor Guide for Tickets, Hours, Rules and Best Family Plan
The Reef Indoor Water Park in Billings is Montana’s largest indoor water park, connected to Big Horn Resort and open to both hotel guests and non-hotel guests. This guide helps families check hours, buy tickets, pack correctly, understand slide rules, plan around height limits, and avoid surprises at the door.
Every step includes the official Reef link, phone number, address or rule beside the action, so visitors can book tickets, check the current schedule, contact the park, plan a birthday party, or get directions without searching again.
Fast answer: The Reef Indoor Water Park is located at 1801 Majestic Lane, Billings, MT 59102. The official contact number is 406-839-9283, and the park email is info@thereefindoors.com. Hours vary by season, so visitors should check the official Hours page before driving over or buying tickets.
Most important packing note: The Reef repeatedly says guests must bring their own towels. Towels are available to purchase, and the Contact page notes beach towels for purchase and hotel pool towels available for a fee.
The Reef Billings Quick Facts
The Reef Billings Action Board
Start here. Each card gives the visitor’s likely task, the exact action and the official link to finish it.
I need today’s hours
Hours vary by season. Check the official Hours page before you drive, especially during school breaks, holidays, bad weather or private-event periods.
Check hoursI need tickets or passes
Use the official Tickets & Passes page. The home page also promotes an annual Family Pass for up to 4 family members.
Buy ticketsI’m bringing young kids
Check height, hot tub and supervision rules first. Children under 14 need an adult guardian present in the water park at all times.
Read park rulesI need directions
The Reef is at 1801 Majestic Lane in Billings. Use the map section below or the official FAQ directions link.
Open mapI want a birthday party
Review party package inclusions, weekday/weekend pricing and no-confetti/no-outside-food rules before booking.
Party packagesI still have a question
Call 406-839-9283 or email info@thereefindoors.com. For group events, the official group page lists option #3.
Call The ReefTickets, Passes and Hours: What to Check First
General admission
The official tickets page is the safest place to start for current general-admission access and pass options.
Official tickets pageHours change
The FAQ says hours vary by season, so always check the official Hours page before planning your visit.
Official hours pageFamily pass
The home page promotes an annual Family Pass for up to 4 family members. Verify current pass price and terms before buying.
Pass informationAttractions at The Reef: What Each One Is Best For
| Attraction | Official detail | Best for | Before you go |
|---|---|---|---|
| Barracuda Blaster | 3-story tube slide for 1 or 2 riders; official attraction page lists over-48-inch height requirement and 600-lb weight limit. | Older kids, teens and adults who want the bigger slide experience. | Check attraction rule |
| Tropical Twister | 3-story body slide for single riders; official attraction page lists 48-inch height requirement and 350-lb weight limit. | Single riders who meet the height rule. | Check slide details |
| Wave pool | The official home and attractions pages describe a 55,000-gallon wave pool. | Families who want water fun without climbing slides. | Supervise weaker swimmers closely. |
| Interactive playhouse | Designed for toddlers and kids under 48 inches, with smaller slides and a 250-gallon dumping bucket. | Younger children and mixed-age family groups. | Still keep younger swimmers within close reach. |
| Hot tub | Official attraction page lists a 20-person hot tub. | Adults and older guests taking a break. | Children under age 6 are not permitted in the hot tub. |
| Lilly pads and water basketball | Attraction pages list lilly pads for agility and water basketball. | Kids who want activity between slides and waves. | Follow lifeguard directions and no-running rules. |
Height, Age and Supervision Rules That Matter Most
Under 14
Children under 14 must have an adult guardian present in the water park at all times.
Supervision rulesUnder 48 inches
Guests under 48 inches are not permitted on the two 3-story slides, except that 45–48 inch riders may use the purple slide with an adult and signed waiver.
Slide height rulesHot tub age rule
Children under age 6 are not permitted in the hot tub under Montana State law, according to the park rules page.
Hot tub ruleWhat to Bring to The Reef
Bring these
- Your own towels. The park says towels are not provided.
- Approved swimwear with no exposed metal or plastic zippers, rivets, belts or ornaments.
- Water shoes if you want better traction; the contact page encourages them.
- Coast Guard-approved life vest for young or weaker swimmers if you prefer your own.
- Dry clothes, plastic bag, sandals, goggles and basic toiletries.
Leave these out
- Outside flotation devices, inflatables or boards.
- Outside food, drinks or alcohol without manager approval.
- Cut-off jean shorts or unsafe swimwear.
- Confetti or glitter for parties.
- Pets; service animals are welcome but not allowed in or near water features.
Food, Shark Shack and Outside Food Rules
Shark Shack
The official home and attractions pages mention Shark Shack as the on-site food option.
Attractions and amenitiesNo outside food
The park rules say no outside food, beverages or alcohol without approval from the water park manager.
Food ruleBirthday exception
Birthday cake, cupcakes and ice cream are allowed with a paid birthday party reservation.
Party food rulesBirthday Parties and Group Events
| Package / group path | Official inclusions | Visitor notes | Official action |
|---|---|---|---|
| Barracuda Blaster party | Official party page lists Thursday/Friday and weekend pricing, 12 all-day water park admissions, birthday child free, spectator passes, 1.5-hour decorated party room, 3 pitchers of soda, 3 large pizzas and a future free day pass for the birthday child. | Good for a larger party group. Verify current package price before booking. | Party page |
| Tropical Twister party | Official party page lists 8 all-day water park admissions, birthday child free, spectator passes, 1.5-hour decorated party room, 2 pitchers of soda, 2 large pizzas and a future free day pass. | Better for a smaller birthday group. | View package |
| Groups and events | Group rates are available for 20 or more people, scheduled in advance. The page says same-day group rates are not available. | Use for schools, daycares, camps, sports teams, church groups and reunions. | Group events |
Big Horn Resort Connection
Connected resort
The Reef’s official home page says the indoor water park is conveniently connected to Big Horn Resort.
Official home pageHotel and non-hotel guests
The official page says hotel guests and non-hotel guests are welcome into the park.
Guest noteAsk hotel pricing
The Reef says to inquire about hotel guest pricing, so verify package access before assuming water park admission is included.
Contact parkWeather, Lightning and Refund Notes
Lightning closures
The official FAQ says the park may temporarily close during severe weather.
FAQ weather noteCall before long drives
Visitors driving from outside Billings should call 406-839-9283 if weather, hours or private events could affect the visit.
Call The Reef10 The Reef Billings Visitor Attributes
2. Official phone
Call 406-839-9283 for hours, tickets, parties, groups and general questions.
Call park4. Ticket check
Use the official Tickets & Passes page instead of old third-party pricing.
Tickets page7. Height restrictions
Guests under 48 inches are restricted from the two 3-story slides, with a limited waiver exception for 45–48 inches on the purple slide.
Height rules8. Food rules
No outside food or drinks without manager approval, except allowed birthday items with paid party reservation.
Food rules9. Party packages
Birthday party packages include admissions, decorated room time, soda, pizza and future birthday-child pass.
Parties10. Resort connection
The Reef is connected to Big Horn Resort and welcomes both hotel and non-hotel guests.
Official homeThe Reef Indoor Water Park Map and Arrival Plan
Use this map for driving directions to The Reef at 1801 Majestic Lane in Billings, Montana. Arrive with towels, swimwear, tickets or pass confirmation, and a height-rule plan for younger riders.
Before leaving home
Check current hours, ticket/pass status, towel bag, swimwear rules, life vest needs and height restrictions.
At check-in
Confirm wristbands, re-entry rules, party room timing if booked, height requirements and where to rent lockers or vests.
Before buying food
Check Shark Shack availability and party package food rules. Do not bring outside food unless it fits the official birthday-party exception.
Official The Reef Links Used in This Guide
The Reef Water Park Billings FAQ
Where is The Reef Indoor Water Park located?
The Reef Indoor Water Park is located at 1801 Majestic Lane, Billings, MT 59102.
What is The Reef Billings phone number?
Call 406-839-9283. The official site also lists info@thereefindoors.com for email contact.
What are The Reef Water Park hours?
Hours vary by season. Check the official Hours page before visiting, especially around holidays, school breaks and weather events.
Do I need to bring towels to The Reef?
Yes. The official site says towels are not provided and guests should bring their own. Towels are available to purchase, and the Contact page notes towel purchase/rental options.
Can non-hotel guests visit The Reef?
Yes. The official home page says hotel guests and non-hotel guests are welcome into the park.
What are the main attractions at The Reef?
Main attractions include the Barracuda Blaster tube slide, Tropical Twister body slide, 55,000-gallon wave pool, interactive kids playhouse with a 250-gallon dumping bucket, water basketball, lilly pads and hot tub.
How tall do kids need to be for the big slides?
Guests under 48 inches are generally not permitted on the two 3-story slides. The rules page says children between 45 and 48 inches may ride the purple slide with an adult and signed waiver.
Can children use the hot tub?
Children under age 6 are not permitted in the hot tub, according to the park rules page.
Can I bring outside food to The Reef?
No outside food, beverages or alcohol are allowed without approval from the water park manager. Birthday cake, cupcakes and ice cream are allowed with a paid birthday party reservation.
Does The Reef offer birthday parties or group rates?
Yes. The official Parties & Groups page lists birthday party packages and group rates for 20 or more people. Group rates must be scheduled in advance and cannot be done the day of.