I've never been in June or Easter Week, so I can't compare.
The parks are busy but they are open later because of Columbus Day. We went to MK- I think it was open til 1 am. The CM's let us through the CM area to get past the crowds on Main St. during the fireworks-we had just arrived around the time Wishes started. We went on some rides that evening-I tried to do the things my niece wouldn't go on as she was being watched by my neighbour-I took their older son to MK. We went on Stitch, Buzz, Monsters Inc., HM, Splash, PotC, BTMR, I think that was everything. Splash was the one with the long line up. BTMR also had a line up but I don't think it was as long. Didn't think we would stay til park closing but we did. We also grabbed a cinnamon bun each from Main St. Bakery to eat later for breakfast.