For most of the year, Orlando, Florida is hot. Hotter than the surface of the sun hot. Little ones (and sometimes bigger ones) will need to cool off and run around for a bit.
In the Magic Kingdom in the Storybook Circus area, is the Casey Jr. Splash ‘N’ Soak Station themed around the movie Dumbo.
If you think your child might like to play here, you may like to consider a change of clothing.
Also keep in mind, that there are multiple entrances and exits to this area so you need to keep a very close watch on your child if they are inclined to be escapees.