Remove your shoes when you enter someone’s home. This also applies to some restaurants, as well.
Avoid stepping directly on the threshold of someone’s home. Instead, step over the threshold.
Most Thai food is eaten with a fork and spoon, not with chopsticks.
Some foods may be eaten with your fingers. Make sure you always use your right hand, though, and never lick your fingers after eating.
Finishing all of the food on your plate indicates that you are still hungry. It is good etiquette to leave a few bites, to show your host that you are full.
Seating is often arranged by social hierarchy, so it is best to wait for your host to introduce you and tell you where to sit.