Do:
• Say "Sawasdee Krab" for men or "Sawasdee Ka" for women when greeting Thai people.
• Perform the 'Thai Wai", a slight bow with the palms pressed together in a prayer-like fasion, while saying "Sawasdee Krab" or "Sawasdee Ka".
• Use "Khun" as the honorific title before a person's first name .
• Always respect the elders. If someone is older than you, address them as "Pee" or "Nong" if they are younger.
• Speak softly and smile warmly.
• Respect the places and dress appropriately when visiting temples and religious sites.
• Always treat any image of a Buddha and Buddhist monks with extreme respect.
• Always ask for permission before taking pictures of anyone.
• Avoid kissing or hugging in public.
• Remove shoes before entering a Thai home.
• Try to learn a couple of Thai words and phrases.
Do not:
• Express negative opinions about the King or any member of the Royal Family. Thai people have utmost respect for the Thai monarchy.
• Pass anything with your left hand and point with one finger.
• Get involved in anyway with drugs. Penalties are very severe from 10 years up to the death penalty for trafficking.
• Point at people or things with your feet.
• Touch a Thai person on the head.
• Raise your voice or get angry as it is a sign of disrespect in Thailand.