for the last seven years, I have visited the bank on a Tuesday or Wednesday and then immigration the next day without any problems (yearly visa extension, retired)
FYI, going first thing in the morning is your choice, but it's probably the busiest time. And you can make an appointment in advance ONLINE.
thank you for the correction on my mix up of certified translation and certified signature. The Hua Hin office of Prachuap Khiri Khan might be the other location requiring it.
Yes. Two of friends are doing it now. I use the bank account deposit vice the retirement letter. U. S. Embassy charges $50 each year per document and that document must be certified translated.