Many Arabs have the Arabic tradition is to kiss a person you haven't seen for a while three times changing between cheeks. Example: You shake hands , then kiss him on right cheek , then left cheek , then right cheek. this is one of many other customs.
Arabs are very generous and highly welcoming their guests.
Arabs are always keen to share the happy and sad occasions of their relatives, friends, work colleagues, and neighbors.
They used to reply to greetings with better greetings as instructed by Quran.