I'm old and raddled now, but when I was younger I had NO tits (32AA until I got pregnant), but I was considered to have great legs (I'm tall so they're long and I used to be skinny) and was also sometimes admired because I have wide hips so (without anything on top) my body was kind-of a figure of 8 (on top of long legs). None of it mattered a jot to me, I was so embarrassed by how tall I was, I stopped down and hid under baggy clothes. This is just what other people used to say to me about my body. (as in, these were things some men would sometimes admire and other women would sometimes say they wished they had, but I wasn't very gorgeous. I'm not pretty).
But my parents were nudists, so I went on loads of naked holidays as a kid.
And, bugger me - DH loves getting his kit off too. So I've been on loads of naked holidays as an adult as well.
So firstly, having been in places with naked people all my bloody life, I can promise, I've never seen an erection in a public place.
Secondly, a small covering (on whatever body part) is a LOT sexier than a naked body part. It's the mystery that makes it sexy. A thong bikini (which basically shows everything anyway) is sexier than no bikini at all.
My pet hates are (a) very young girls in bikini tops. I really hate these. Just let them wear the bottoms! They ride up in any case, and they're just inconvenient. Don't bother!
And (sorry, MN, loads of you are going to hate me) (b) I hate a waxed or shaved genital. To me it's like trying to look like a child when you're a grown up. It's your right, it's your freedom. Lots of you love it. LOADS of your partners prefer it. I find it ikky and quite disturbing.
But tits out on a sun lounger? I probably wouldn't even notice!