Actually, when Easter falls in the last week in March, you can expect it to be even worse for crowds than when it falls other times. Majority of schools in US still have their spring break either the week before or week of Easter; a significant minority always have them at the end of March/beginning of April. Result: this is a double whammy year for crowds at Easter. They are showing MK open everyday from 8 to midnight and many of those days it is opening even earlier for resort guests. The only reason for those very long hours is that Disney is estimating such a huge crowd that it is trying to spread out the crowd a little because it knows that otherwise MK would fill to capacity everyday.