I thought this article was pretty decent in explaining tipping practices around the world. It also includes the Caribbean.

https://www.hgtv.com/lifestyle/trave...eling-pictures

Tipping wasn't common place in Jamaica outside of the tourist areas (read tourists, not Jamaicans) when I'd started living in Negril 16 years ago. It has become more prevalent around the Island, albeit still not in most of the Mom & Pop shops.