The Orlando Sentinel reports that three of the four parks in Florida were temporarily closed, or had their parking lots closed, due to capacity issues today. This usually happens during peak hours on the busiest days of the year. If you come back later in the afternoon the parks are less busy.
The only open park was EPCOT which is a people eater with its many high capacity rides and wide avenues. Nice to hear that Animal Kingdom reached capacity. I wonder how soon fastpass was gone for Mt. Everest? 10AM? (Read)