I can only speak on what I've experienced and what she's told me, but at each of the clubs I visit, the "most in-demand girl" spends pretty much the entire night with me. The only time she's not with me is when she's on stage. Typically that's when a host of other guys go up and start whispering to her, then she shakes her head no and after her set comes back and sits with me some more. She's very much in-demand, but also understands that the most consistent money is already there.
When I'm not there, she's told me about how she has a bunch of one or two and done regulars that come in. She moves from one to the other through the night, taking the little money that they have, dancing almost non-stop. Every now and then a new guy will jump in for a few dances, but never a long string. We're in an area not known for high earnings, so she has to put in a lot more work.
I think that's why she prefers when I visit. We don't dance until the last hour, and when we do get to the last hour, she doesn't charge me anything for the dances. I pay my VIP fee, and we have some fun. Everything she's earned prior to that covers the dances. It's a good system. I get great company, and she doesn't get tired so she has more energy for the next night.