Hello Deborah and thanks for bringing your question to the Disney Parks Moms Panel.
I'm quite sure that your darling little water babies would love either of Disney's
splashtastic Water Parks, but if you really made me choose I'd pick
Disney's Typhoon Lagoon every time!
I love this beach paradise for many reasons; from the lazy
Castaway Creek river and the splashing waves in the
Typhoon Lagoon Surf Pool to what I'm sure will be on your daughters favorite list -
Ketchakiddee Creek. My Disney Water Park
top tips are to arrive early and find a nice shady spot to 'make camp' for the day, be sure to apply plenty of high factor, water proof sun screen and wear beach style shoes to protect little tootsies from the sometimes quite warm sun baked walkways.
If I can help further plan your May 2015 vacation to Walt Disney World Resort please pop back to ask me another question.
Have a great Disney day.
- Jane