I was in your shoes last year. Our first trip to Universal was the 3rd week of June, and I was scared I hadn't "planned" enough. When we do Disney, I'm the girl who has dining reservations 6 months out, a complete binder in hand with park information, minute to minute itineraries, etc. Total commando. Universal was such a different experience!!!! We spent 5 nights at RPR, we saw everything AND did something I've not been able to do at Disney: relax and go with the flow!! One day, we spent over an hour at mystic fountain eating popcorn and watching our kids play in the water. We let our kids (8 and 10) ride the rides as many times as they wanted! We spent a lot of time relaxing at the resort pool!! (Kids LOVED the water cannons at RPR!!) We ate wherever and whenever we wanted... Without making a single reservation!! Best.Vacation.Ever!! I will never convince my dh to go back to Disney, and I don't want to!! And don't worry about your kids being too young... there is a ton for them to see and do!!! Have fun!!!