What cultural faux pas should I try to avoid making in Kampong Thom?

"When visiting Kampong Thom, it's important to respect the local customs and traditions. Avoid touching someone's head, as it is considered the most sacred part of the body in Cambodian culture. Also, refrain from pointing your feet at people or religious objects, as feet are considered the lowest and dirtiest part of the body. When visiting temples or other religious sites, dress modestly, covering your shoulders and knees. It's also considered disrespectful to take pictures of monks without their permission. In conversation, avoid discussing politics, the Vietnam War, and the Khmer Rouge regime, as these topics can be sensitive. When eating, use your right hand, as the left hand is considered unclean. Also, try to finish all the food on your plate, as leaving food uneaten can be seen as wasteful and disrespectful. Lastly, remember to always ask for permission before taking photographs of people, especially in rural areas. This shows respect for their privacy and personal space," mentioned another expat when asked about moving to Kampong Thom, Cambodia.