We make a family visit to WDW in April, during the inevitably crwded Easter break, but I go to to WDW every week by myself in August. It's GREAT - especially if you go mid-to-late August, when the Florida kids are back in school. However, as others have already mentioned, it usually POURS in the afternoon, so my advice would be to get up EARLY, get to the parks, and see as much as you can before those thunderclous roll in. And they will - make no mistake! Last August, the skies were blue and cloudless every morning; by afternoon, I was pouring the water out of my sneakers. Which brings me to another subject - rain gear! Scotchgard your canvas sneakers before you leave. Bring ponchos, umbrellas, a spare pair of dry socks for every day, etc. You WILL need these, because a Florida downpour takes no prisoners!