On the back of Epcot is also theSwan and Dolphin. If you are walking, you can just walk the full loop around. Or use the boat at each stop.
You can also go to any other resorts via bus from the main exit of Epcot, but typically the Deluxe resorts will have the most elaborate decorations.
I understand that Ft. Wilderness is almost an attraction unto itself at that time of year. You'd have to go via bus to get there from Epcot. The decorations are put up by guests, and are quite elaborate.