My wife and I will be going to CSA early next year. This past Winter we went to Punta Cana and both wore thongs while on the beach. Felt great! I've done a search and most of the threads are rather old, but it sounds like our thongs will probably not be out of place at CSA. My wife went topless for a short time at Punta Cana and is looking forward to it again, and I understand from the FAQ that topless is OK at the beach at CSA.
So...as a relatively fit 155# 61 year old with my marathon-running almost 10 year younger wife, will we be the only "mature" couple wearing thongs at CSA? Will we be one of a very few wearing thongs at all?