Oase. Too many Tourists and non-frequent Customers
Too many tourists and non-frequent customers usually equates to poor service especially on nights when the club is busy. Two of the optificks mentioned recently at Oase coincidentally are petite, young, cute blondes (Vanessa, Christina). At a club with demographics like Oase, there is probably a stream of East-Asian customers queuing up for them.
The girls worst nightmare is a Stammgaeste who is not particularly wealthy. Since this type of man goes 1-3 times a week, he has to be more budget-conscious. Because this type of man attends so much, he is also de-sensitized. He's used to having sex with young girls, so he probably won't blow his load the first five minutes in the room. The girls also seem to stereotype German customers for their tendency to always be "richtig". If the official price is 50 EUR for 30 minutes, some German customers expect to get the full 30 minutes. Germans mark their glasses with 0. 2 L and 0. 5 L. Clearly they are obsessive about getting everything that they paid for!! Other nations are less diligent about marking their cups and will fill half of your glass with ice to cheat you, LOL.