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

"When visiting Chiang Rai, it is important to avoid touching someone's head, as it is considered the most sacred part of the body. Be respectful of the local customs and dress modestly, especially when visiting temples or religious sites. Remove your shoes before entering someone's home or a temple. Avoid pointing your feet at people or religious images, as feet are considered the lowest and dirtiest part of the body. Do not show public displays of affection, as it is considered impolite and disrespectful. Be cautious when discussing the Thai royal family, as they are highly revered and any negative comments can lead to serious consequences. Avoid raising your voice or losing your temper, as Thais value calmness and politeness. Finally, be respectful of local customs and traditions, and always ask for permission before taking photographs of people or religious sites," remarked another expat in Chiang Rai, Thailand.