We'll be there from 12/9-12/13 and I think that there are a few reasons why people might be thinking that this time of year might be a little more crowded than usual. I believe that Pop Warner is normally here during this time, but now there's also the reschedules from the hurricanes, Mousefest 2004, the discount codes that Disney released via e-mail a few weeks ago and the low airfare (at least from my location).
Brandon&Misty, unfortunately Spectro does not show during MVMCP. They have 2 showings of a special Christmas parade and fireworks at 9:15.
Andrea I know what you mean about having the park hours available for planning. The only times that are set in stone right now during your stay is the MK on 12/7, 12/9 & 12/10. It will close to regular guests at 6pm and then re-open from 7-midnight for MVMCP. As for Epcot, those hours rarely change from the standard 9-9. Based on historical hours, MGM is probably going to run until 7pm, with the Osborne Lights coming on at 6pm. If you're wondering about the schedule for MVMCP, here is the info from 2003
Mickey's Very Merry Christmas Parade
8:15 & 10:45 PM
Wishes Nighttime Spectacular
9:15 PM
Mickey's 'Twas the Night Before Christmas
Galaxy Palace Theater in Tomorrowland
6:15, 7:15, 8:15, 9:30 & 10:30 PM
Celebrate the Seasons
Castle Forecourt Stage
7:00, 9:30 PM & 12 Midnight
Goofy's Country Dancin' Jamboree Celebrates the Holidays Show
The Diamond Horseshoe Saloon in Liberty Square
7:30, 8:45, & 10:00 PM
Belle's Enchanted Christmas
Fantasyland Pavilion
7:30, 8:40, 9:30, 10:20 & 11:10 PM
Santa's Snowflake Special
Fairytale Garden in Fantasyland - Storyteller
7:25, 8:05, 8:55, 10:15 & 11:30 PM
Lake Howell Holiday Band
Tomorrowland Stage
6:45, 7:45 & 9:00 PM
Tammi