On your free time, try edging masturbation and do cum control. It will send you feedback on how close you are and when you have to stop. You can always tell the masseur to stop a bit if you are about to cum and you feel it's too soon to climax.
RIcardo is latin on the shorter side. He is nice and accommodating, but no real massage talent, unfortunately. He uses his fingers to massage. He does make you leave happy though.
That's not a hard and fast rule. I have hired self-employed masseurs who have gone well above and beyond , and warranted a tip. #dontassumeitsjustchemistry