Also must be shown with the driver's licence it was obtained with. Technically good for 90 days each trip in Thailand, but police never checked how long I had been in the country. Insurance might check. Also some insurance policies require a Thai licence. You can easily get a Thai licence if you want to stay longer.
Bangkok bank is so far the only bank that is compliant in the new AML laws in Thailand. You can transfer more than 50,000 baht to Bangkok bank as they can manage and report according to the rules.