The cabins, at Fort Wilderness not Wilderness Lodge, will sleep 6 plus one under 3 years old. They have a bedroom with a double bed and a set of bunks and a murphy bed in the living room. Cabins have one bathroom and a full kitchen. You will be able to park one car right at your cabin and there is a large deck and charcoal grill for each cabin. Mousekeeping will come everyday, just like at any Disney resort, and will even load and run the dishwasher for you.
Check over on the camping board, I think there is at least one active thread about the cabins right now.