Are you going to be staying at the campground?
If so its first come first serve..so keep that in mind. We drove down last October for a family camp on a random weekend and it was full. It wouldn't have stunk so bad except for we then drove to Rock Island (full) and finally ended up at Bledsoe Creek which is only 30 min from the house after being in the car over 6hrs with a 2 & 4 year old.
Fun times.