Visiting each of the resorts to see how they are decorated for the holidays is a lot of fun. The problem will be getting from one resort to the other. Getting around by car could be rough at that time of year, so I would rely on Disney transportation.
I would begin with taking a bus to the MK and walking from there to CR. Then, catch the monorail to the Poly, followed by the GF. Then take the boat over to the MK and grab the resort launch to WL. From there, take a bus to DHS and walk to the BWI. You can either walk from there or take a boat to YC/BC. Don't forget to check the S/D while you're in the neighborhood. Go back to DHS and catch a bus to AKL/AKV (both Jambo and Kidani).
If at all possible, take in Downtown Disney as well. Perhaps do some window shopping or get something to eat. You can get a bus back to your resort from there.
Another great idea is to take an evening run through FW. Many of the campers really do their campsites up for the holidays!
Here's a link for ideas of what to look for at each resort.
http://allears.net/tp/h_decor.htm
Search for hidden Mickeys among the decorations. You'll be surprised at the creative ways that they are made.