Our standard used to be 3 park days. We had to move quickly and sometimes only got on the big rides once, but we we're able to do everything we wanted to do. In November, we did 5 park days/6 nights. I think that will be our new standard going forward. Now that our kids are adults, we don't have to do everything together all the time. If someone wants to get up early and make rope drop, they can go. If someone wants to sleep late and meet up later, it's fine. Having 5 days meant we didn't have to rush around or feel like we were wasting time when we wanted to relax. We did a sit-down meal almost everyday, often at DTD. It was nice to leave the busy parks and have a nice leisurely meal. We rarely had sit-down meals on shorter trips since we wanted to maximize our park time. If you can swing a 5-day trip, I would recommend it.