Tried the Ft Wilderness Cabins over Christmas and although they are not handicapped accessible they are fine if you are able to go up a few steps. There is a spot next to the steps where and EMV can be parked and with an extension cord plugged in to the outside plug and charged. I actually prefer the Cabins as they are nicely appointed. The extras really make it there.
Tip is to be the first on and last off if possible.
This allows the boat to be as close to level with the dock as possible. Backyard Barbecue is accessible but rough. If you ask they will bring you in through the entrance to River Country where it is paved instead of over the wood chip area. In February 1997 I stayed in one of the 8 Wilderness Homes set up for handicapped guests. The Homes are in the middle of the 2800 loop 4 on each side.