When we were there for spring break, we took advantage of emh at MK. The gates opened at 7:00...we were there by 7:15. We have a 2 yo ds and we were able to ride everry ride in fantasyland by 8:00. It was wonderful. The park started getting more crowded around 8:30, but we had hit one of the busiest parts and we were able to go on other popular rides without wait while others were waiting in fantasyland. It was a busy week overall, so I can't say whether emh had much effect or not. We stayed in the park until 1:00 and left to go to rest and swim, and would go back around dinner time. I think we will always take advantage of the emh!