We were also thinking about a trip to WDW this Spring Break, but my ds's spring break also falls the week after Easter. I have been told that the week before and after Easter is one of the busiest times besides Christmas. I think the fact that Easter is early this year and runs into Spring Break time will make it even busier. We have decided not to go during this time. I just don't want to be there when it is that crowded. I am sure the parks will be open late and the weather should be beautiful. We went two years ago at the end of April and it was low 80's with little humidity. If you decide to go, just be prepared for the crowds.