I honestly haven't drove in for several years, but I take the boat to the beach to meet people there. The trails are generally ATV and cycle size. I have seen some buggy's there, but it would be very limited acces to the main trails. The main draw there is woods trails and hill climbs.
To exactly answer your question, I don't know. They really don't monitor access, they don't charge admission that I know of. I believe they drove some posts to keep trucks out of certain areas, which would limit buggy access as well. It would be best to call before driving, but I can also say that if all you were taking was a buggy it would get old pretty fast.
