I went to a resort on the west coast of France a few years ago and they had so many rules about body Jewelry and it was policed. Essentially any genital Jewelry was banned and I could sort of see why because it was a family oriented place with lots of children so I suppose the management felt that pierced genitals were inappropriate. All that one needed to do was remove any Jewelry whilst on the premises and wear it when on the public beach so it was hardly a big inconvenience.
I'm intrigued to know what the feeling (of pleasure) might be when wearing a butt plug, and I realise that I could just try one and find out for myself, but having once agreed to allow myself to be fucked I can't imagine that wearing a butt plug could be pleasurable! ....I'm basing that on my experience of being fucked which I can say for sure was a painful and not particularly enjoyable!