I stayed at the Jekyll Island Campground about five years ago. I remember it being heavily wooded with very tight spaces. Personally, I would not stay there again because I like space. That was also the memorable place where some misguided camp hosts decided an after-dark teen scavenger hunt would be a fun idea. Lots of screaming teens until 10 pm, similar to the Ohio state park that sponsored a night-time Big Foot Calling Contest for teens.
There are also a couple of golf cart rental companies on the island. I rented a golf cart to explore and drive around the island. Only problem was running out of a charge.