Happy Birthday Josey!
Man, I can remember taking my three sons to Disney World in July. The heat and humidity just sucked the life outta me and the wife. (And I was reallllly physically fit back then, too.)
We were fortunate enough to be able to stay at the Contemporary for a few days- which allowed us to head back to the room from about 12-3pm for a little afternoon nap. That is the only way to do Disney World with kids!