You seem to think I should know EVERY bank at CW and the opening hours? You were sarcastic with me when I tried to be helpful. Bangkok Bank no deposit or withdrawal is required, they just update. I can't comment on EVERY bank. Entitled Americans make me sick
If there is a branch at CW you simply take your book in and ask the teller for an update. This will make a B/F entry in your book. But yes, making a deposit or withdrawal will have the same effect