We live about 65 miles from there an have camped there twice last year. There are basically two sections. The section that is nearest the lake seemed to have recently renovated bath houses but the road was unpaved at the time we were there. The "back" section had a recently paved street and larger sites and I think the bath house was either just renovated or was scheduled to be renovated last summer/fall. Each site is very wooded. There is a fire ring and a charcoal grill (IIRC) at each site. The sites are gravel and fairly level, but not perfectly so. There is electric and water, but no sewer, at each site. There is no cable available either. There are gray water dumping stations about every third camp site in the "back" section where we stayed both times. The lake is stocked for catch and release. There are weekend ranger presentations that are really quite good. If you are going to be in the area for a couple of days, there is Calloway Gardens very close by that is really nice...especially see the butterfly house. There is also an animal park on the other side of the city of Pine Mountain that is OK but nothing compared to Animal Kingdom. There is also trail riding for about half the price of Ft. Wilderness that is really good. Much more diverse terrain and twice the time and distance for half the money. The FDR Museum is nearby as well and is very interesting along with the Little White House home. I recommend touring both if you have time.
This is Georgia's premiere state park and is recently begun a renovation project. It is also Georgia's largest state park by acreage.