I understand why a girl working in a salon would find presentations tedious, and there's no question that there's a lot of time wasting guys out there, but it's also a great opportunity to sell yourself to the clients, and most of the best providers I know don't waste the opportunity.
As a guy going to MPs I think you're nuts if you don't get a presentation, unless you're returning to see a regular. Even so, places that I frequented more regularly would often ask me if I wanted a presentation to meet new girls every time I went, because as an established customer they know I won't waste their time in general and it's great KYC to help target their recommendations and solidify their hold on you as a customer. Still, most places aren't this customer centric, and we all know that. This is especially true in the asian places. There isn't one of us who hasn't been told "5 girls available" and when you show up 10 minutes later they're all "busy", except for the woman who answered you on the phone. In a 3 room salon. The ones who use A123 or Lespac or LL or whatever and use fake photos. Fake website photos. etc etc. "I have a 2pm with Coco." "Coco no here" . "I made the appointment1/2 hour ago" "kiki here. Kiki very good. You try Kiki". A lot of these places simply want you to walk in, pay the room fee, and they will send whoever is next in the rotation to come and see you. They know many guys won't kick up a fuss or insist on seeing the girls and will simply accept whatever comes their way. Nobody should be that guy. You shouldn't fork over anything until you know what you're forking over for, and are happy with it. Walk if you're not. You have absolutely zero obligation to session somewhere simply because you walked in the door and they're willing to take your cash.
I got a great piece of advice early on in my mongering career. One of the guys told me not to pick the girl, but to let the girl pick you. In a presentation you won't just see what the girl looks like, but you'll also see how she reacts to you, whether she seems interested and lively or simply bored and disinterested. Does she make eye contact with you? Does she smile? Does she seem good humoured? Does she seem friendly or have a friendly greeting? Funny? Does she seem interested in you? A fantastic looking girl who looks at you like you're a tax return or a pumpkin probably isn't going to make for a good session for you. The presentation is a great opportunity for you to see new girls and to see who reacts to you in a more positive way. Those girls are very likely going to be the ones you enjoy being with the most. If you don't have a presentation then you miss the opportunity to get all this great information.