Even though it will be crowded, I think you could do some of the big 3 rides in the early am, FPs, lower wait activities such as Figment, LwtL, Nemo, the Seas, Crush, 3 Caballero, and the Shorts at peak times. And there are lots of holiday shows/storytelling/booths to keep you occupied when it gets really crowded.
During times like Christmas, the WS pathways can be completely congested at night, and some quick planning on order of storytelling may help from having to walk back and forth across WS more than necessary.