I'm getting ready to apply for my first retirement extension of stay and the only point that concerns me is obtaining the letter from the bank, Bangkok Bank, substantiating my 800k balance for the year. When do I request this letter from the bank? The day before I go to CW, a week before, a month before? It needs to cover a full year. Money was there, no problem, I've maintained the full 800k in the account for simplicity purposes and account is in only my name. Can I do this at my branch in Bangkok, or do I have to go to the main office and can I do this in one day. Sorry if this is repetitive, but I couldn't find anything specific about this. Thanks in advance for your kind help.