We just returned from WDW last night. My kids are 11 and nearly 9. They both loved MK the best, with Epcot second. In Epcot, they loved Soarin' (so did I), and they enjoyed WorldShowcase. We met a lot of characters there, particularly princesses. MGM and AK were tied for 3rd, because they both had one attraction that they loved in each park (Everest & ToT). MK was the only park they wanted to go back to for more than one day however.