It's interesting to read everyone's experiences!
We have been going the week after Easter for several years, not by choice but because that's our spring break and we would never take our kids out of school. They're excellent students but we jsut don't believe in it. Plus, they're in so many other activities (sports, music etc) that they would be missing way more than classes!
Easter week is busy but thankfully, we've never found it overwhelming and we've never had a problem! It's always been a wonderful time and hopefully will be this march, also.
We've been able to do everything, some things several times, with Fast Pass and GOOD planning. One year we did Rockin Roller Coaster (our fave) *13* times and TOT *4* times over our three days in the park, in addition to doing everything else.
So, it IS possible. But you DO have to plan, go early and use Fast Pass.