I attended the MVMCP last December. They close the park @ 6pm, and re-open at 7. We had a 5:30pm PS at the Crystal Palace, allowing us to eat like horses through the closing, and be delightfully full with wristbands in place by the 7pm re-open.
While the masses were staging at the front gate, around 6:45 we walked out the front door of the CP and strolled over to Independance Hall for our pins & photo, then took our time roaming through the park, taking in what rides and attractions we wanted to. It wasn't very crowded, and we rode several rides two or three times. The Jungle Cruise at night was especially entertaining.
The parade was very nice, but not on a par with SpectroMagic or TON. But there are enough gorgeous dancers to satisfy the most ardent Rockettes fan, all the characters are dressed in their holiday finery, and of course it's always good to see Santa!
If they continue with last years plan, the performance of 'Wishes' has some added touches that you'll enjoy. I won't give them away.
I think that the clincher for me was walking down an incredibly beautiful Main Street, aglow with Christmas lights and gently falling snow.
I sure enjoyed it, and I'm ready to go back!