I can't say enough good things about the cabins. They are so nicely decorated and Ft. Wilderness really has a lush, peaceful atmosphere. The restaurant has a great buffet, really one of the last "bargain" meals left in the world, and the whole environment is just beautiful. The cabins have a wonderful kitchen and a nice bedroom -- lots more room than a regular room at the resorts.
That said, Ft. Wilderness is NOT conducive to "hurrying." You can walk to some areas within the campground, but the cabins are pretty far out from the trading posts and restaurants, and for that there are the buses. These run regularly but plan on some waiting. There is also a boat to the MK but again, accessing the boat area will probably require a bus ride.
If you enjoy nature and a place with "rustic charm," the cabins can't be beat. Fort Wilderness really is a little resort unto itself. If you are headed to the parks most of the time anyhow, and enjoy more hustle and bustle, plus access to a food court, the moderates can't be beat.