I camped twice at the Fort about 6 years ago -- the first time was in August and the second time was the last week of October/first week of November. Both times were VERY HOT. The main reason that I chose camping was for the extra magic hours. If it wasn't for this, I probably would have just stayed in a motel for the same price just because it was so hot.
I did not cook because I was with a 2 year old child so camping at the Fort is a good choice because there's so many dining choices. Besides the buffet, you can get take out at the trails end restaurant (a plate of chicken with 2 sides for example.) You can also walk to Wilderness Lodge.
I didn't rent a golf cart or a bike because my kid was in a stroller. I used my car to get to the parks except MK.
At night, it was a bit confusing to find my loop from the boat dock (not well lit up) so bring a flash light.
The restrooms at the Fort are pretty nice and clean. They seem centrally located and plentiful -- you also have laundry facilities there.
My camping neighbors were very helpful with putting up my big tent (it was a second hand tent and clearly too big for my needs but it was what I had at the time.)
I liked the premium camp site over the regular campsite because I could hear the buses running near the regular campsite.
As to whether the golf carts are necessary?? I think it just depends on your family and your budget. They probably make your vacation nicer because the campground is fairly large but you can get where you want to go with the internal bus system. If you're visiting during the holidays and want to see decorations, the golf carts would be nice.
I now live in Orlando and still visit the Fort regularly when friends stay there. I would tent camp again at the Fort but not in hot weather.
I think another consideration is whether you will have enough time to enjoy the campground -- there's a lot to do -- swimming pool, biking, fishing, pool side activities led by the recreation staff, campfire sing along, carriage ride.
The plus side of camping at WDW is that you're close enough to grocery shopping, camping supply stores, and Wal-mart if you forget something.