I was there for a week around the 4th of July a couple of years ago and had a great time!
It was mostly older folks but over the weekend some younger people late twenties/early thirties showed up.
The grounds are beautiful with lots of Florida flora and fauna - I saw lizards, an armadillo and herons - there was a memorial marker for a beloved raccoon. The social center is the pool/clubhouse area but there's petanque and volleyball courts and a drum circle/fire pit - drums are only allowed on Saturdays or something like that to keep the noise down :/
My favourite aspects were one of the couples I met (my age), talking to the owner (originally from Minneapolis - no stranger to snow) and the outdoor showers by the pool. The restaurants of West Palm Beach were great too.
One of these days I'll get there for an FYN event - maybe meet Crasher.