Great question... I had been wondering the same about Cabana OB until last month. Found out for myself -> the answer is "yes", if you are willing to spend a ton of money on them.
First of all, the girls that are mostly dancers, make a lot of money in the bar due to their superior dancing skills as compared to the girls who just stand around like statues.
The statues only make money when their "jaanus" visit the bar and shower money on them.
The dancers on the other hand receive tips from a diverse group of patrons. Some dancers also attain some kind of "stardom" in the bars due to their dancing skills and beautiful looks.
The dancers expect you to tip them a significant amount in the bar before they give you their number. Then you will be expected to spend another significant sum of money when you meet them outside. If the girl senses that you are "soft hearted", she will string you along for a bit in order to extract the maximum amount of money before sleeping with you. The bar girls are aware that most guys will move on to the next bar girl after they sleep with the current muse. The novelty wears off after "entry" specially if the bar girl was passive in bed.
Bottom line: every DB and OB girl goes for "entry" outside the bar as long as you are willing to meet their monetary demands.