Have u tried Kasikorn in Udon. They, like Udon,s immigration office, are more user friendly and speak English. Lots more Brits living there. I'd try the one in Central first. Good Luck.
and the only queue was the normal queue for the airline check-in. Anticipating congestion, I went through passport control and security earlier than I normally would but sailed through as normal. In fact, quicker than normal.
I have deliberately done this 3 or 4 times over the years to get an extra day's nooky...555. They have never made an issue out of it and never fine for 1 day. In 17 yrs no repercussions. Cant think how there could be. One time the IO made a joke of it calling me a naughty boy with a big smile on his face as he pointed to the desk to pay the fine but they only put a small blue stamp (not red).
yes I had forgotten given it was 3 or 4 years ago when I applied, that it was pension proof or money in the Bank. Even easier if you have a pension. All sorted. Now you can relax.