A hi, a friendly smile, singing Statesboro Blues as you walk by, a wave, a sabai dee as you walk by, just exude happiness and you will be tossing down shots with them.
Just keep repeating Jai Dee to yourself and act like it. Thais and Cambodians like happy foreigners, especially the folks that dont get to interact with foriegners alot.
If you are here to escape the <deleted> climate of your country and are in a tropical paradise, why are you ever even going to think of getting into a pissing match with anyone?