Another option for RV renters is myrvhotel.com.
As other posters have indicated, it was sure nice to have nothing to setup.
Just got back from a 9 night stay at the fort.
We rented a 5th wheel RV from myrvhotel.com.
Their service was fantastic. They have 3 models to choose from. I believe their rates are $149 night.
Although my wife and I are Disney veterans, this was our 1st visit to the campgrounds. Our usual pet sitters were unavailable this year and so we thought it would be fun to bring our 2 Havanese dogs with us for a change. We soon realized that the only pet-friendly accommodations, on Disney property, were the campgrounds at Ft. Wilderness.
As some of the folks on this forum have mentioned, fort wilderness is fairly expansive and so we also opted to rent a cart from myrvhotel. This sure made getting around the campgrounds a lot easier (and was fun to boot)
I have been soaking up all kinds of useful information from the boards and podcasts for years and so if I can be of any help to folks considering an RV rental, I'd be glad to answer any questions you may have.
Regards,
Paul