Challenge accepted ... yeah, those scenes are visible there. Of course the question is, if you HAD been 18, would you have participated?
Only once in my life did I ever find myself in a public nudity situation. I was invited by a girl I knew to accompany her to a folk dancing festival up in the mountains somewhere. I wasn't into that but what the hell, I went. Turns out she had pointedly neglected to mention that it was traditional at that event for it to go nudist for some hours before camping out for the night (or maybe after, I don't remember). This created a classic dilemma, where you stand out by not participating. So again what the hell I played along. And it was actually quite interesting -- the wide physical variety of the human animal unencumbered by clothing. Of course this was an era when everyone wasn't carrying smartphone cameras with them -- that would have changed the dynamic enormously. But as it was, yeah, it was interesting. I never felt any inclination to try that again however, and I did learn that certain body parts not usually exposed to the sun can burn very quickly.