I have stayed at Ft Wilderness many times and it is my favorite overall place to stay. The scenery is beautiful, especially around Meadows Trading Post which is a store that also has some expensive grocery items, but has checker boards for the kids to play at, as well as rocking chairs outside, I remember being a little kid and as the rain came pouring down just sitting in those chairs under the overhang as it kinda felt like a comforting sauna. The shows are great and the kids love the movies at night. Also near Pioneer Hall there are free roaming peacocks and a petting zoo you can visit daily.
As for the cabins themselves they are basically three room, a main one with table and bed that comes down from the wall, with TV and a connecting kitchen that has a full size fridge. The bathroom is fairly standard, but then there is another roomin the back, with one large bed, and two bunk beds, that kids usually love. Also in this second room there is a second TV so if you have disagreements of what to watch, the kids can watch their own TV. The cabin is surrounded by cedar trees and is very quiet and calming, with a porch and a picnic table for you to have cookouts, that's why many have grocderies or try to buy them when staying here.
If I had two major suggestions it would be these. Because of the sheer size of the campgrounds and it's location it can be time consuming to get to the parks. Some even suggest using your own transportation. The way transportation works is you take a bus to one of two bus stops on the campgrounds and then from there you take a bus to one of the parks, or a boat ride to the magic kingdom. This can annoy people who don't know this. BUT there is something you can do to make better time, as welkl as move around the campgrounds quicker. You can rent a golf cart to drive around, as you'll see many people using tem, and the kids love them. These you can drive to either bus stop, either the beach area or the main gate area, park the carts there, and then just wait for the one bus or boat. Of all the resorts, none has as many activities as Ft. Wilderness, and it is kinda cool to go back and have your own building to yourself after going to the parks. If there were one negative it's transportation....BUT the golf cart helps greatly, though fitting six in might be a challenge, you might need two trips or two carts. As for Caribbean, I also loved it....but I'd go with Ft. Wilderness as it's completely diferent experience. Caribbean's Port Royale is cool and the beach is nice and stuff.....I do honestly love it too, but I'd go for the fort if money wasn't a big deal. Also Ft Wilderness has a beach, practically every sport near by, pools, two stores, shows, a petting zoo etc. The horses that walk the carriages in the Magic Kingdom live at Ft. Wilderness and you can visit them when they aren't on the job. Also there is no food court like most disney resorts, so you might want to figure that in as well. Sorry if I went on for too long.......just thought this might help. I'll see if I can post some pics to better explain stuff

I can't post attachments....for this I am sorry as I do have some nice pics of Ft. Wilderness.....it is one of my favorite places to be as I went there every Christmas. If you need or want to see the pics, just mention it and I'll try to e-mail them.