What cultural faux pas should I try to avoid making in Puerto Rico?

We asked people in Puerto Rico if they could share any humorous cultural blunders they commited. For new expats, keep in mind that these incidents are an inevitable part of expat life. Learning to laugh about them is the key!...

Other Questions:

•  What should I pack when moving to Puerto Rico?
•  Where should I setup a bank account in Puerto Rico?
•  Will I be able to find a job in Puerto Rico?
•  What is life like in Puerto Rico?
•  What do expats in Puerto Rico appreciate most about the local culture?
•  What do expats find most challenging?
•  Is there a lot of crime in Puerto Rico?
•  Is there a lot of diversity? Are people in Puerto Rico accepting of differences?
•  What are the schools in Puerto Rico like?
•  What are healthcare services like in Puerto Rico?
•  What are medical services in Puerto Rico like?
•  Are healthcare and health insurance expensive in Puerto Rico?
•  What are emergency services like in Puerto Rico?
•  Will I need to travel to see a specialist?
•  Are common prescription medications available in Puerto Rico?
•  How are local medical facilities in Puerto Rico?
•  As a foreigner living in Puerto Rico, will I have access to public healthcare? What is it like?
•  What have your experiences during the pandemic with the local healthcare system been like?