Hi Kimberly! Welcome to the Disney Parks Moms Panel!
Thanks for bringing us your planning question! It looks like you will be arriving for your Walt Disney World Resort vacation in just a couple of days. I'm happy to help with these last-minute details.
At both
Disney's Blizzard Beach Water Park and
Disney's Typhoon Lagoon Water Park, Guests staying at a Disney Resort hotel are eligible for a complimentary towel rental. Just make sure to wear your waterproof MagicBand so it can be scanned to verify your stay. Guests not staying on Walt Disney World Resort property can rent towels for a $2.00 rental fee.
I spoke with a Cast Member and verified that towels need to be returned prior to exiting the Disney Water Parks. If you decided to visit both water parks on the same day, you would need to return the towel at the first water park, then rent another towel at the next water park. I was just at Disney's Typhoon Lagoon Water Park, so I know you are going to have a splash-tacular time!
I hope this helps as you prepare for your trip, Kimberly! Please visit us again with any other questions you may have!
Tabitha