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

"In Guatemala City, it is important to be respectful of local customs and traditions. Avoid making negative comments about the country or its people, as this can be seen as offensive. Additionally, it is important to dress modestly, especially when visiting religious sites. It is also important to be aware of the local language and to be respectful when speaking to locals. Finally, it is important to be aware of the local customs regarding public displays of affection, as some may be seen as inappropriate," remarked another expat in Guatemala City, Guatemala.