Hanoi will occasionally ask the gym to fire of a confirmation email to establish the course documentation are real. Very easy, no problem for the gym to do it. Ho chi minh do it more often than Hanoi though.
The set rule is the 500k needs to be current balance not seasoned. But some embassys have made it there own requirement, but then those embassys have also shown flexibility on occasions. Sadly its just not clear but one thing we have found is that they dont like empty accounts that just go to 500k balance just before application.
I guess its the job of the embassy to establish if you have enough miney to maintain a long stay in Thailand and they like to analyze your bank statements and make a decision on each applicant individually.
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