We were there this past Easter. Take advantage of EMH. We actually braved the crowds and went to MK on Easter Sunday. It was EMH in the am and pm... We got there at 7 am. We got some character autographs and ended up riding Dumbo, Peter Pan, Small World, Pooh, and Snow White all before the park opened to the public at 8 am. then we went and got fast passes to big thunder railroad and did splash mountain. after those two, we walked right onto Pirates and Jungle Cruise and then saw the Tiki show. We did do child swap, so it took a little longer, but we had rode all of that by lunch- so I would recommend MK on the morning of Easter Sunday. After lunch it was super crowded and we took a hour and a half time out and found a secluded corner and both of my kids napped. The rest of the day, the lines were longer, but not as bad as I expected.
The day after Easter we hit MGM and the crowds weren't that bad either. I will say the worst crowsds were on the Tuesday at both Animal Kingdom and Epcot - After this trip, I've learned- Epcot is the best to hit in the morning- as the fast passes are gone by afternoon. Animal Kingdom was wall to wall people.
But, if you plan out the stay and get fast passes and take advantage of EMH, it should be a fun week...