@Jim ******
I had two Bangkok Bank accounts, one for my visa money, and one for daily use. I just opened a Kasikorn Thsi account last week. I opened it to split my money over a couple of banks. I only had my passport (because I had just done 90 day report), my Bangkok Bank passbooks (bookbanks), my BB debit card and my Thai Drivers Licence. I actually went to ask them what I would need, and they decided to open it with what I already had with me. It depends on who you get I guess.