We have tickets for
MVMCP on the 12th of November. I know it's early to be in the Christmas spirit, but we are only at WDW for a few days, pre-cruise, and wanted to do this. To the poster who was wondering if the park would even be decorated for Christmas this early -- I can't see Disney NOT going whole-hog on Christmas decorations for a Christmas party, regardless of how early is might seem.
Our plan for the day of the party is to not even bother with regular park tickets. We are staying at Bay Lake Tower so we'll probably kill the day hanging at the pool or browsing shops until 4pm, then take advantage of the lighter crowds (supposedly pre-Thanksgiving is supposed to be lighter crowds anyway, and we are hoping that the earlier MVMCP won't be as busy either).
I'd like to try for watching the later parade and trying to get some rides in during the early one, but a lot depends on the kids and how tired they are. One plus is that our bodies will still likely be on Mountain Time (we arrive on the 10th), and it won't seem as late.
John