Some one posted this and also I totally think this, overall crowds to FL are worse due to the horrible winter this year. You hear reports non disney related on how crowded things are. I work in the tourism industry ( airline) and we see an inrease to warmer destinations in spring when winter has been horrible.
On the flip side It wouldnt surprise me if ski areas show less business. I live near a ski area and when winter has alot of snow and easter is late, most people skip on skiing and go warm.
Seeing that. FL can be reached in 1 day for many states, last minute trips are also possible.