We were at MGM Saturday 6/5 and MK Sunday 6/6. They were not bad at all. On Saturday, we actually left the park about an hour before closing, which we never do, because we had done everything we cared to do including several rides on TOT and RNR. Sunday at MK we did EMH and had done six major attractions by 10:00 am. We hopped over to EPCOT for lunch and then back to MK right as the afternoon parade was ending. Many people were leaving and the crowds thinned even more during a brief rain shower that followed. That was probably our best park day, which really surprised me since it was a weekend. Just avoid MK on Saturday and you should be fine.