Hi Denise,
Thanks so much for your kind words about the Disney Parks Moms Panel! We love helping you to plan your magical vacations.
For my family, a trip to Walt Disney World simply is not complete without a trip to
Disney's Typhoon Lagoon Water Park or
Disney's Blizzard Beach Water Park. We love splashing the day away! We just returned from a trip where we went to Typhoon Lagoon. We did rent both towels and a locker. Towel rental is $2 per towel. We rented a large locker, which was $10 plus a $5 deposit returned to you when you return the key. So you must pay $15 but then get $5 back. This large locker was big enough for our backpack and a couple of other items. You can also rent a small locker for a little bit less; however, those just do not hold enough stuff for us!
Choosing which water park I would recommend for you to visit is difficult. I think that what matters most is which theme appeals more to you. They both have a mix of relaxing and thrilling attractions, and both have many beach chairs where you can lounge the day away if you like. If you prefer a tropical paradise, head to Disney's Typhoon Lagoon Water Park. If you prefer the whimsy of a melting winter wonderland, Disney's Blizzard Beach Water Park may be right for you. If I were going with just adults, I would probably head to Disney's Typhoon Lagoon, but again, that is based on my preference for the theme.
I hope that this is helpful for you, Denise! Have a great time planning your vacation, and please do not hesitate to ask if you have any further questions.