It's Christmas in July: we just booked Shades of Green for December 18-23, 2010!!!!

I've no idea how my mom did it since apparently their Christmas rooms book up to a year in advance! I have an annual pass to DL but have never ever been to WDW and have of course been dreaming of my grand Floridian adventure ever since I was 8 and would only wear Beauty & the Beast sneakers for a year and a half. I'm in grad school currently so that was awhile ago (heehee) however I'm currently in groveling mode

b/c I can't believe my parents are finally aboard w/ my plans!
I'm not sure if we'll do
MVMCP?

We'd have to go the 19th, which is the last party, so I'd imagine it'd be quite crowded. Is it worth the $50 ticket per person? We're of course planning on checking out the Osborne Family Spectacle of Dancing Lights, and I insist on watching the Jingle Jungle Parade in AK, but are there any other Christmas activities you all recommend?
-Lauren