Thais respect hierarchical relationships. Social relationships are defined as one person being superior to the other. Parents are superior to their children, teachers to their students, and bosses to their subordinates. When Thais meet a stranger, they will immediately try to place you within a hierarchy so they know how you should be treated. This is often done by asking what might be seen as very personal questions in other cultures. Status can be determined by clothing and general appearance, age, job, education, family name, and social connections.
The traditional form of greeting is the wai, given by the person of lower status to the person of higher status (raising both hands, palms joined with the fingers pointing upwards as if in prayer, lightly touching the body somewhere between the chest and the forehead). Thais generally use first rather than surnames, with the honorific title Khun before the name. Khun is an all- purpose form of address that is appropriate for both men and women. In general, it’s best to wait for your host and hostess to introduce you to the other guests. This allows everyone to understand your status