When it is expected, and what matters more than money
Thailand is not a tipping culture in the American sense. Nobody depends on tips for a wage and nobody will be put out if you leave nothing. But it is warmly received, and in one or two situations it is simply what people do.
How, not just how much. Hand it over with a smile and your right hand rather than leaving it on a table and walking off. The gesture registers more than the amount.
Thai service culture runs on composure and courtesy. A few things go a very long way:
We live here — ask us anything about Hua Hin and you will get the real answer.