Avalanche Bay Birthday Bash
Dive into the celebration of the decade! Avalanche Bay Waterpark is turning the big 2-0, and we're making waves with our Birthday Splash Bash Weekend, May 16-18! Water you waiting for? We're offering an unmissable deal: just $20 Day Passes all weekend for all ages! That's right—we're flooding you with savings! The fun crests on Saturday, May 17, with a pool party that'll make a real splash! Enjoy a complimentary birthday cake (while supplies last) as we celebrate this milestone together!
Birthday Weekend
May 16 - 18
- $20 Day Passes | All Ages
- Complimentary Cake on Saturday, May 17 (while supplies last)
- 20% off lodging in the Mountain Grand Lodge and Spa
20% Off Your Stay
The Mountain Grand Lodge and Spa is also celebrating 20 swim-sational years with a tide of savings—20% off stays during our birthday weekend!
- 20% Off Stays in the Mountain Grand Lodge and Spa*
- Rates start at $176 per night
- May 16-18, 2025
- Promo Code: SPLASHBASH
- Offer ends Thurs, April 29 at midnight
*New bookings only.
Ticketing Options
Day Pass
Dive into fun without draining your wallet during our Birthday Splash Bash Weekend, where ALL day passes are just $20 for everyone! It's our special way of celebrating 20 years of splashes and smiles, giving you access to all your favorite water attractions at this incredible anniversary price.
$20
Your Homebase
Give your family a "home base" while you enjoy the waterpark with our Premier Seating options! Rented for the day, choose between our exclusive Cabana Cove or our Premier Seating.