It's not so much where they are, it's the people around Pattaya. They are working with people who don't have a lot of self control. That's what hedonism is. People who don't want to or can't limit sensual pleasures. The further out from the Central area you go the less you will encounter them.
So they are around people acting kind of goofy, angry, overly emotionally happy, whatever, and not very stable. Most people trying to live a normal working life won't be happy with such people because it's very irritating and draining to deal with them.