@Eric ******
Thank you for the information, good to know if I ever have to do this again with another bank. In the mean time the problem got solved in another way. I got that photocopy of my passport stamped by my embassy earlier than expected, and with that Bangkok Bank was ok to open an account for me. I provided my wife’s home address for now as my residency. I’ve also got my 400k THB already transferred to it via TransferWise and it shows up as an international transfer, so I’m all set for whatever immigration can throw at me 😀