Gary Cooper me neither live in a tourist aria. But most condo in city's have an aria with washing machines. I am sure the reception or guard post is happy to change your 10tb coins. Further as I said. Local market is mostly happy with the coins.
But in BKK you go by 6:30 and you are out before 10:00. It's on the second floor now. They have separated it from the visa department and goes much faster. You can do it 2 weeks in advance.
I understand 100% what you mean. But I am fast scary. And I wouldn't take the risk of future discussions or even being denied entry.
But I understand the absurdity of doing the 90 days for one day.
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