I was there this past January (20th through 26th) and saw no Christmas decorations. The crowds were tiny. The longest wait we had was 25 minutes for Test Track one afternoon. The rest of the rides were either walk-on or 10-15 minutes max. Most of them didn't even have FastPass in use. The weather was pretty chilly in the mornings (we wore sweatshirts and jackets), but pleasant in the afternoon (light sweater and pants).