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

"It is important to be respectful of local customs and traditions when visiting Montezuma. It is important to dress modestly and to avoid public displays of affection. It is also important to be aware of the local laws and to respect the environment. It is also important to be aware of the local language and to be respectful when speaking to locals. Additionally, it is important to be aware of the local customs and to avoid taking photographs of people without their permission," mentioned another expat when asked about moving to Montezuma, Costa Rica.