We just got back last night. We were there early at MK for the Little Ones Magic Hour on Wed morning and it was great. It seemed like we had the park to ourselves, and we LOVED IT! It pretty much stayed that way until we left around 1-2pm. Well, the next morning was the "regular" EMH morning at MK and by 8:30am it was crowded. I should say, there were alot of people, but the rides still weren't too bad for the waits. But by the early afternoon, Pirates even had a 45 minute wait. We got out of there quickly.
We stayed Friday night for the late night EMH at Epcot. We figured that everyone would be at the Halloween party. WRONG. There were 40 minute waits at Soarin' and Test Track. With no FP available.
I guess everyone on the DIS boards are correct: stay away from the EMH parks.
HTH
Mary