I'm with pennylynn, the decorations are amazing.
When we left a park and had nowhere to be immediately, we would hop on the first bus that came in for a moderate or deluxe resort (or deluxe by monorail) and just go check out the decorations at the resort. We loved Coronado Springs (it's also our favorite to stay at), I think the decor there is beautiful! We went to eat at Hoop Dee Doo and went early to check out the incredible decorations done at the campground and to see the horse drawn sleigh. Decorations at the deluxe resorts were amazing. We spent one full day checking our decorations.
The parks are just as incredible, we especially loved all the themed trees at AK in Camp Minnie-Mickey. And, of course Osborne (sp?) Lights at DHS.
It's true, take your time and just take it all in. It's truly magical!