We went to Orlando this Easter. We rented a villa about 20mins from the parks which was great, own pool, clubhouse and our own space, beats a hotel room any day. You need time to unwind after a day in the parks and a villa allowed us all to do that and not be on top of each other in 1 hotel room, we could spread out!
The crowds were not too bad and lines got shorter after Easter Monday when the US kids went back to school.
Where ever you go Disney, Paris, Orlando, LA you will have a great time, even just seeing your children's faces light up is wonderful and you might even enjoy it yourself!!!