What will offend the SP is if you tell her you don't want to pay her full rate because it's cuddling and talking. You have to pay the full rate. I am not sure I understand why you would think an SP would be offended by having to work less rather than more, unless your plan is to offer her a $150 "social hour" rate. Your question implies a couple of things, one of which is that all SPs enjoy or prefer having sex with their clients, which isn't the case. Another is that they are open to discount city. It's not like shopping in Mexico where you can negotiate a price with the retail salesperson. You pay a fixed rate, even if it's to have her dunk your head in the toilet bowl for an hour, Dude style, and not all SPs would be open to this type of domination: