Heather, welcome to the DIS Camping Board!
You asked about info on the Fort. Have you already explored the DIS pages on it?
http://www.wdwinfo.com/wdwinfo/resorts/ftwild.htm
The photos have lots of pictures of campsites etc since the writeup above is cabin focused.
Here is a link to a map of the Fort which is in our FAQ sticky. It will help in understanding the Fort.
http://www.wdwinfo.com/resortmaps/fortwilderness.htm
Loops 100-2000 (20 loops) are for tents, trailers, and rv's. Loops 2100-2800 are cabins which sleep up to 6 people, have a full kitchen and bathroom, and are very nice.
As far as the camping loops, there are 4 types. Ranging from cheapest to most expensive, they are Partial/Tent (terms interchangeable), Full, Preferred, and Premium. All sites have water, power, cable tv, free cable modem internet (must check out a Disney modem kit). The only utility difference is Partials do not have a sewer line hookup while the other 3 types do. Tent, Full, and Preferred all have sand pads to put a tent on, Premiums are extra wide and all concrete. Loops 100-300 are Preferred, loops 1500 and 2000 are Tent/Partial, loops 1600-1900 are Full, and loops 400-1400 are Premiums.
It would help to know how many people are in your group. What time of year are you planning?
People can rent campers from outside providers. One provider people use rents popup campers (I happen to own a popup). They can go on the Tent/Partial sites and claim to sleep up to 8 people but that's using every available inch of space at night. Popups are like tents but you aren't sleeping on the ground. They're the cheapest to rent.
Another provider will rent travel trailers of various sizes. They sleep more, have solid walls so better in really hot, really cold, or wet conditions. Naturally they cost a little more.
You reserve the type of site you want for the number of days. It's YOUR reservation. You pass that info to the vendors and they will arrive a few hours before you and completely set up everything. When you leave at the end of your vacation, you just lock the door and drive off. They will come in behind you and take down and pull the trailer off.
You can buy the Dining Plan at the campsites but since we campers usually have our kitchens, fridges, coolers, and/or stoves with us, we eat some meals at the Fort to save on meal money. You can shop for your own groceries off site or use online services like wegoshop or gardengrocer to select groceries ahead of time and they will deliver into the trailer fridge on whatever day you select (arrival?). People rent golf carts for transport internally or use the 3 colored bus lines shown on the map. Of course there are sidewalks for walking and the Fort is a great place for bicycles (that's what we do).
Here are the two vendors I hear mentioned most on this board. I've used neither one so I can't endorse them:
Here is the popup vendor:
http://fortcamperrental.com/
Here is the trailer vendor:
http://www.greenbergrvflorida.com/
A stay at the Fort really can't be compared to a resort stay. Folks are outdoors more, generally more friendly, and there's lots to do at the Fort itself. It has two pools, great places to fish, you can rent canoes or bikes, and the nightly campfire singalong with Chip and Dale is followed by a movie. Roast some marshmallows and get an autograph from C or D. You can watch the fireworks over the beach from the Magic Kingdom with music piped in.
Hope this is enough to get you started plus what else you've found. Once you have specific questions, fire back at us. We have a great bunch of folks here to answer your questions.
Bama Ed
