Little confused by your last comment. You want real answers or sarcastic ones?
It's not bermuda so you don't need long socks to be polite. Or any for that matter. Aside that just do what is polite in your country. Basically when I see someone being an ass, I know they wouldn't be acting the same back at home.
If spicy food makes you uncomfortable, don't eat. Just order a bunch of sour food and what the thais make funny faces
BF or lurk. If you're strapped for cash, then beggars can't be choosers. Spend your night at the 50baht beer bar and wait till 3am to start looking for Sansabai leftovers.
Ring the bell if you want to meet guys. Buy a whack of LD if you want to meet girls.
Complain...if you are a newbie then doubt it will even cross your mind to complain. You'll suffer from an overload of joy. Only complain if you want to fake being a burnt-out expat
