For most Costa Ricans, religion is very important. It is not an appropriate topic to bring up with people you have just met. Please be careful with what you say and respect the people’s faith even if you are not religious.
Greetings: Ticos are friendly people; often even greet strangers. An air kiss to the person’s right cheek is the common greeting in Costa Rica.
Roads: In Costa Rica it is important to look out for cars before crossing the street as most drivers will not stop to let pedestrian pass.
Pura Vida: Be patient and relax. You are in a latin country and attitudes to time differ in comparison with western countries for example. Latin countries tend to have slower paced lifestyles. The famous saying Pura Vida describes this very well.
Do not be too direct! Ticos are non-confrontational people. Confrontation is not appreciated and will always be avoided. You should try not to shout, to raise your voice or to show signs of irritation in case of misunderstandings.
Don’t judge and embrace the difference. Being lost in translation and in a different culture is such an amazing feeling. Enjoy Costa Rica!