All you have to do is ask for it....Some of the providers really like this and will jump right in to it (in fact, most of the providers tell me it is the easiest money unless they get a real aggressive guy who knows how to work a 3some then they are not too excited as they are licking pussy, sucking dick as it comes out of the other girl's hole, etc)...I only pay what is quoted and never tip and never have any problems going back for 2nds or 3rds...If you're a regular and the girls see you often, they know you will return so they do not always want to charge and they do not always expect a tip as they know you will return (repeat business is more important than a tip or overcharging for 1 visit)...If you wanna tip, go ahead, if not don't. But definitely pay for the services rendered when quoted. These girls need to pass time and if they can make more money or secure a repeat client during some downtime they will. It's a business but they need to kill down time as they work 18 hours a day but usually fuck "only" a dozen or so guys...that's why they pass out their cell #s so they have somone to talk to but also it makes us guys feel special thus keeps us coming back....Gotta love it.