Yes, the park closes at 6:00 and reopens at 7:00 but if you have a ticket to the party they do not kick you out. Last year Mickey's Twas the Night Before Christmas show began at 6:45. This is in the Galaxy Theater. We went to this last year at by 6:30 it was standing room only. I would suggest heading over there early and catching this show. This way when the party starts you will already have one thing already done. I believe after this we went over to the castle for the show there. I believe this starts at 7:00 so we missed the beginning. I think the Twas the Night Before Christmas show lasts almost 30 minutes.
I beieve the shops on Main Street are closed.
Linda