Like anywhere just use common sense and keep your wits about you , i always visit the atm in daytime and return my C.C to the hotel safe immediately , dont be tempted to go drinking with it in your pocket because if you lose it when drunk - your'e fcuked !!!
Like Steven eleven has said , dont draw out big amounts either 10 or 20,000 baht is more than enough each time you visit a bank .
Different BM's here spend varied amounts depending on what you plan to do in the evening , are you going to drink like a fish ? will you be buying many rounds ? ringing bar bells ? bar fining 1 or 2 ladies ? eating out? ...etc...
For anyone who is visiting a new place , it is difficult to guage at 1st , how much you will spend in an average night , if you go to the POLLS & SURVEYS section here , you will see a thread quizzing BM's how much they spend on average per day , have a read & this should hopefully give you some kind of idea how much to take out with you each night.
bear in mind some members are hardcore drinkers & tg consumers so you may find you dont need anywhere near as much.
Some nights i spend as little as 2,500 - 3000 baht , some nights can easy go up to 6000 - 10000 baht. depends what you are doing really but dont carry too much around & try not to flash it about either
Hope this answers your questions :thumbsup: