If you consider retirement and going to live in Thailand it is much too early to buy a house or marrieng!! Start living together day and night some years before taking major steps
not to discuss request but visit the bank and ask if it is a request or fake.that is all. The request itself is the same as request from other banks and you have to provide the answers
you wrote that you do not remit in Thai baht. You remit money to Thailand. That is in principle taxable! Doesn't matter if it is Thai baht or another currency!