Hi. I'm planning on visiting Thailand with a multiple entry visa, which is valid for 6 months. As far as I understand, I can time my last re-entry so that I get almost 8 months, and then extend it by 30 days too, for a total of almost 9 months in Thailand. Is this correct? If this is my plan, am I allowed to enter Thailand with a return flight ticket for about 9 months later?
(To clarify, I'm not asking for the exact date, because I understand this depends on when the visa is approved and so on. But rather, I want to know if it's around 9 months, or for example 6 months, or what?)