We went to two MVMCPs last year and both nights they were letting people in with their
MVMCP ticket around 4:00. We did burn a day on our tickets, but there was a line of people going in at 4 with just their party ticket. BTW- supposedly they make everyone go to tomorrowland at 6:00 while they get the other guests out- so a 6:00 seating at Tony's would be great. However, this wasn't very well organized the two nights we were there and people were all over Mainstreet at 6:00- some even saving places for the 8:00 parade!!! We spent the time taking a leisurly stroll without the crowds- non-party goers were leaving. Also, there is a Christmas show around 6:00 in Tomorrowland if you're interested (you'd have to change your ps though, or excuse me, they are now called ar?) You might want to look at the them park strategy board- at the top is a sticky thread about MVMCP and it probably has a schedule of shows from last year. Have a magical time!