NS in Sauna of FKK

Hi,

I'm not familiar with the concept of fkk or sauna, as a NS and anal lover I'm used to going to private houses or girls, however I'm thinking about going to a sauna or fkk for the first time now.

In your experience, is NS performed in these clubs and are there clubs or girls which can be recommended?

(I speak and read german, but I write Englisch easier, so feel free to reply in German).

Thanks!!!