Never been to one, however I just instinctively feel it would be mostly old people there.
The closest I think was one time when we went to Mexico or DR to one of the resorts. We had a swim up room so the pool came up to our "front porch" and we could also see our neighbors porch where the pool went to their room.
Anyways we had no one next door for most of our vacation, however the last couple of days some like 80+ year old man arrive with his smoking hot like 20 something girlfriend. She apparently thought it was a nude resort and would just hang around naked outside. I personally didn't mind, seemed like a nice free perk the hotel was offering, however since I was there with my gf it was kind of awkward so glad it was only for a day or two.
