Well, going to these places is by the nature of them, risky for non locals. Knowing what works, how locals operate helps. Don't overplay your hand, don't insult (even unintentionally, it can cause affront). I think it helped that he seems to be very situationally aware. It's not going to work well, if you're green at it. Like many things, it probably takes luck and practice and interpersonal skills.