The Fort is really unique among the resorts at Disneyworld, if you want to know more about it you should go over to the camping board, but watch out, it can get wild over there
I like the cabins, and the campsites but I'm not going to try to convince anyone else to stay there, more room for me. However, I will clear up some transportation questions. For the most part you will need to take two forms of transport to get anywhere, one bus to the bus station or boat dock, and then either a bus or boat to your final destination. The boats only go to WL and the MK. There is a pool complex, a stable, playgrounds, a beach, restaurants, arcade, general store. Whether you need to take a bus or you can walk to any of these depends entirely on where your site/cabin is located. Its a big resort, if you stay near the pool you'll need a bus to the transportation area, if you stay near the boats you'll probably want a bus to the pool.
One thing you can't do is drive your car to the resort and then drive everywhere you want to go. For the safety of the campers, driving around inside the resort is not allowed. You can drive out of the resort or to your accommodation but you can't drive to the pools, boats, etc. This is why so many people use bicycles or carts because they are the most efficient means of travel around the resort. It's a slight inconvenience at first but I personally appreciate the tranquility it brings.
The Fort is probably not the place for "commando" style travelers but for those who want to lay back and take it a little more slowly there's no place better.