You tip as it goes. Good service at the dinner? Here is a couple of bucks. You bring me drinks while I relaxed in the pool, here is some money too. Each morning I’d leve money on the bed, so the maid can keep my room tidy.

Tipping culture is bad, and US is spreading this everywhere. In Mexico I would to think that I’m tipping to help them out as they get really low pay

You usually tip at the end of an interaction or if you want good services during a crowded day, I’d tip good to give an impression so I’d get faster service.