We've gone anywhere from 3 nights to 8 nights (most trips have been 7 nights, but we're trying to keep it to 8 nights from now on). No we don't do anything outside of Disney, basically because on vacation (other than some ADRs) we don't like ot have plans, and we don't have a car (which is fine because we enjoy just getting on the busses). We're very go with the flow, and I feel like, if we did universal-- then I'd have to have a plan for the week and schedule transportation. When my boys get a little older, we're going to do Universal, but I think we'll actually switch resorts at the end of the trip and stay at Universal. Anyway, I'm waiting for the kids to get older since I hear there's alot of thrill rides. I did Sea World as a kid and hated it, so I don't plan on doing that again.