Hello Sergio,
Welcome to the Disney Parks Moms Panel and thank you for asking us a question!
My little guy visited Walt Disney World Resort’s Water Parks long before he was potty trained, so the answer to your question is a definite YES! He was free to splash his little heart out in his swim diaper during all of our prior visits.
The only caveat I would give you would be with respect to your daughter’s height. While the fact that she isn’t potty trained shouldn’t be an impediment for most (if not all) of the attractions at
Disney’s Typhoon Lagoon Water Park, she may not be tall enough (or brave enough!) to experience everything. Please make sure to check the height requirements for any attractions you may want to experience. If an attraction says it's for Guests of "
any height", then you'll be able to enjoy it together.
Please don’t hesitate to come back and see us if you have any other questions.
Have a Magical Day,
Lynne