OP I don't want to hijack your thread, but I'm in nearly the same boat as you. We'll be in WDW, only have one day for Universal, and will have two kids with us. The boys are 7 and 11 and I think we will be skipping coasters and huge thrill rides. I was planning to only visit IOA because we only have the day (boys are obsessed with Harry Potter)....Will this be enough to keep them busy for the day if we only do IOA? I would rather not try to rush through both parks..but I would also hate to plan to spend the day and be done with everything by 11. None of us have ever been to Universal so I'm sorry if these questions are silly. I'm enjoying reading everything!!
Oh..and if it makes a difference we will probably buy the express pass thing for each of us for the day. Thanks!!!