I am visiting Cologne June 6, 7, 8.  That is a Saturday, Sunday, and Monday.  i already have plans made for Saturday and Monday but I thought I might take Sunday afternoon and evening and have my first FKK experience.  There are clubs around Cologne and Dusseldorf that would be the closest options but I can get on a train and to go as far as Frankfurt (several choices) or Darmstadt (Sharks seems like a hot choice right now).  I would probably have 4-5 hours to spend in the club before heading back to Cologne for the night.  

This is my only opportunity to get an FKK experience, or I could invest in one of the local ladies from one of several escort sites that all seem good.

Dusseldorf clubs are nearest, Frankfurt and Darmstadt in the 90 minute to 2 hour travel range.  Where will I get the most bang for my buck?

It is a Sunday afternoon and evening.  Where will I have the most fun with lovely, mostly natural girls and also have a good environment.  Those of you who know, I appreciate your advice.  I only speak English but should be able to negotiate as much conversation as required to get what I want.

 
There really only is one club in Cologne proper: Samya. Easily reached by tram U16 (stop Michaelshoven) and only about 20 euros by cab from the center. It is a fairly nice club, but the wellness isn't all that (only a couple of saunas), food is ok and beer is included in the 50 entry fee. I would expect around 50 girls on a sunday. The club isn't FKK though, since the girls walk around in lingerie or the like... in the evening about a third of them go topless though. There is an incomplete list of girls on the website (and the pics are not photoshoped)... many pretty girls, but sometimes you have to be lucky what service is concerned. English will get you further than German. This is very much a party club though and every night they have a dj, and you'll have a lot of girls dancing around. If you take the sex out of the equation, this is the funnest club to go to (in my opinion). Do realize that the club will start up slowly on a sunday (late afternoon to early evening) as saturday night goes on till at least 5 am... I left yesterday at about 4 am and it was still very much a party. This really is one of the few places that still has a nice atmosphere on a sunday!

If you want the real FKK experience, you should go to Sharks. They have cheap early entry on sundays (45 euros), which means there is a decent amount of guys and thus also girls. I'm not sure I'd recommend it in you situation... the trip takes some time and 4/5 hours isn't that much for the club. But they do have nice jacuzzi's, swimming pools (outside and inside). If you would be in Frankfurt I'd definitely tell you to go here. I guess it depends on your preference of party over wellness.

There are some other small clubs near cologne, but I wouldn't recommend those unless you have had a taste of the FKK thing and decided you feel better in smaller clubs. These places are also fairly dead on sundays. I wouldn't recommend going to the Duesseldorf clubs, since they are very similar to Samya (also with the late nights for saturdays), but without the party on the sunday.

Thanks icebear.  I am considering Sharks.  It has been recommended to me by several on other sites and there do seem to be plenty of late night trains back to Cologne from Darmstadt.  it doesn't appear to be a very long cab ride to the club.  Samya is definitely in the running.  Do any of the Samya girls ever leave with a gentleman or is all business strictly in the house?

Well, do make sure you have the trains figured out (I'd think you'd better leave before 10 pm). If you decide to go to Sharks, make sure you are early. Cheaper entry is until 2 pm and you'll have a good number of girls by 3.30pm. The wetter will probably be good enough to enjoy the garden, so that is another reason to be there early. Some girls will arrive in the early, so that is always worth waiting around for.

I'm sure some girls in any club occasionally meet men outside the club (most of them probably), but I'm not sure you'll manage this as a first time client. This mostly happens when girls and men know each other well and most of the time it isn't paid for (or maybe just the time spent having sex). Some clubs are very much against this happening, while others don't care. I don't really know where Samya falls. Realize that many of the girls actually sleep in the club, so it would be kind of obvious if she wanted to leave at the end of the night, just as one of her clients is leaving.

I'm not a lingering guy, so five hours would probably be more than enough for me.  I could probably get what I want if I arrive around 1:30 and leave no later than 8, if you think there will be enough selection of girls on a Sunday afternoon and early evening to justify a trip from Cologne?  I think I would be happy with two good sessions with really hot girls but wouldn't want to show up on a day when all the top talent is away.

 
For those times on a sunday, I don't recommend Samya. You'll be leaving before the evening really starts. In Shark you should be fine though, as some girls show up early because the guys show up early for the lower entry fee.