Another Epcot vote. We love it. Really check out the show schedules. my kids loved playing the drums at the Africa station, acrobats, USA band, candy lady in Japan, etc. Many of the shows don't start until the p.m., so plan accordingly. They like both the Norway and mexico boat rides (Norway is a little scarier, but my wimpy 4yo did ok). And there are really good characters--Jasmine/Aladdin/Genie in Moracco, Belle/Beast in France, Snow White in Germany, sometimes Mulan in China, Mary Poppins in UK. The character bus is nice, too. And they loved making the masks. The masks and charcaters can fill in between some of the shows.
In FW, don't foget the musical fountain toward the entrance, My kids love it. And yes, they love the "giant golfball."
Illuminations is great, but late. It may be worth starting a bit later in the day at FW, do WS in p.m. when there are shows, then have a nice dinner to relax/rest, then get a spot for Illuminations. We give our kids new little toys to play with while we wait (little princess figure sets worked for both Illuminations and Fantasmic). We never did the back to the hotel break, but that works for many people, too.
