It depends on your budget and how much you like the MK. There are some shows that you can only see at the party. We try to get to those. There are also character photo opportunities that can be hard to come by - our Christmas card picture with Scrooge McDuck didn't happen last year because DH wasn't in the mood, but this year I have told him Scrooge is going to be first on my list if he is out! The rides generally have very short lines. The parade is great and the fireworks are wonderful. If my budget permitted and time allowed, I'd do it twice in one trip. We just never seemed to have the time or the money. And the two late nights can be tough when the kids are little. DD is 16 now so she can outlast us!