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

"It is important to be mindful of cultural norms when visiting Santiago. It is considered impolite to be late for appointments or social engagements, so it is important to arrive on time. It is also important to dress conservatively, as Chileans tend to dress more formally than in other countries. Additionally, it is important to be respectful of the local customs and traditions, and to avoid making negative comments about the country or its people. Finally, it is important to be aware of the local language and to avoid speaking English in public, as this can be seen as disrespectful," said another expat in Santiago, Chile.