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

"When visiting San Jose, it is important to be mindful of cultural differences. It is considered rude to show too much skin when dress code calls for more conservative clothing, such as during a religious ceremony or at a public event. Additionally, it is important to be aware of the need to address older individuals first and to use formal titles and language when speaking with them. It is also considered rude to refuse an invitation to drinks or food, particularly when offered by someone of a different social class. Furthermore, bringing attention to any discrepancy or difference in social or economic class between you and the locals should also be avoided," remarked another expat in San Jose, Costa Rica, Costa Rica.