It is the best beach on Kauai but I was surprised to see naked people walking around in all their glory. My wife and I went their twice. The first time we went it was just her and I. It was around sunset and I can honestly say it was one of the most amazing scenes I've ever witnessed in person.
The second time we went to the beach it wasn't necessarily busy but there were around 40 people there. If you turn right you see all sorts of naked people. If you turn left you have families and kids. We went right because we had no idea. Needless to say we were only there for an hour or so until we left.