I don't always agree with latintopxxx, but on this topic I can't find anything he wrote that I would disagree with. In my opinion, if you are the customer and have made an arrangement with a willing young gent, and you have made sure he understands what is expected of him, then I see no reason to settle for anything less than that.
I believe in treating the boy well and giving him a good tip. But I also realize if he is a money boy, then this is his job. If he doesn't want to do a good job, then he should look for something else. And right now in Pattaya the hotels and many restaurants are desperate for hiring help, so finding another means of income is readily available.