Too much tourism will fuck up the clubs
Here are my two cents into this issue:
Take almost any major city, and you will find the tourist sex thing overpriced underqulified, rip offs and just plain bad stuff. The FKKs are not so much a tourist thing yet. It is not known to that many outside of Germany. That means the girls have to some extend rely on repeat customers and reputation. This equals quality service in most cases.
Same goes with f.ex. the Spanish bar scene. Within the well travelled path of the big cities, it is crap. Go 20-25 km outside the city, and you will find some pretty good clubs that cater to locals. Tourists of course find their way to those clubs, but then it is on a different agenda, not the spur of the moment when you'r pissed drunk and decide to get some piece of ass.
Ask almost anyone, and they know of the Amsterdam or Prague scene. I bet that under 2% of them have ever heard of FKK. Excellent.
I don't want to have the FKKs more commercialised and too known outside Germany. It will ruin them. Yeah, I am selfish so what.
I agree with you Peter on the number of clubs. I remember when World first opened and then Atlantis reopened. It was damn difficult to keep track on who was where and the overall quality suffered for a while. If the clubs become too many, we will probably start seeing them trying too lure more tourists in = more single time visits, drunk assholes etc. It will fuck things up.
Chivaz