We'll be there March 25 - April 3rd at Wilderness Lodge! Me, DH, DS 16, and DS 5. Poor DD, 19 will be stuck at college.
We were there a couple of years ago at this same time (and it was Easter, too) and we were fine with shorts and t shirts most of the time. One night was chilly and I had to buy a sweatshirt. (good excuse for more WDW souvenirs!). But remember, I'm from the south, so it may not have been too cool for others.
Also, I don't remember it being THAT crowded. What stands out in my mind was the great weather. We were at YC Concierge on Easter Sunday and were totally surprised as we went down in the morning to greet Mickey and Minnie in their lavender Easter finest on the lawn. Big moment for little DS. Mickey and Minnie looked so beautiful. Not sure if this was planned or what as I was not quite yet the obssessive disney freak you see before you now.
Another memory is that Easter Sunday we were at the rope to WS in Epcot when it dropped and it was totally empty. We had the whole place to ourselves for quite awhile. It was very special.