We've never visited US or IOA before, but my teens are wanting to visit when we go to Disney this summer. We are not HP fans, but the DSs 15 & 13 would like to experience some more thrilling attractions. Do we need 2 days to experience this if we don't spend much time on HP? What are some of the big thrill rides? We are renting a car, so I was thinking of staying a night onsite at the beginning of our trip to take advantage of early entry and express pass. Any thoughts?