Hey famof5, we are going down the same time, and I don't think it will be that bad. There's a thread with a poll of when everyone has spring break. The week before Easter (this week) and the week after Easter are the busiest.
I think a lot of the New England states have the 4/15 - 4/20 off, but NY and others including private schools have their spring break earlier.
We are going to stay at a condo for a few days and then head to Nickeleon Hotel for 2 or 3 nights. They had great rates for that week.