I have a one year Multiple Entry AO visa Australian passport obtained from Thai consulate in Sydney. I realise this can effectively be pushed out to two years, as each time I enter Thailand I am given a 12-month stamp. My question is, as I need to return to Australia every three months (for approximately two weeks, for personal business), does this mean my visa will be effective for only 15 months, as once the visa expiry has passed, and I am outside of Thailand I will not be allowed back in, irrespective of what date is shown on the last entry stamp? Logic suggests this is the case, but I wanted to be sure this is how it operates. Thank you