I would love a week on-site .Don't push ,use the early entry,and express ,They should love Dr suess area ,Kidzone,When it get busy (and it will get busy) Go relax in the Pools (you can use all 4 ) Do not miss Horror make up(funny not scary) ,Sinbad,Bettlejuice shows.Also Kids will get a kick out of Interactive Mystic Fountain.Not to mention all the Harry Potter stuff.