; I heard it too conc. Insurance. Also heard that it doesn't have to be a Thai one with the exact amounts. You maybe can avoid the requirement with just going to y'r imm. office before sept. 1.
Most imm. offices allow you to ask the year extension 30 days before the old one expires. Ask y'r imm. office because there are imm. offices which allow you to ask 45 days before. I read it sometimes happens the imm. office asks to return with only a couple of days left.
. A return ticket is not much more expensive than a one way. Many times you can ask a refund on the return part if you not use it. Had a return ticket with EVA Air which was about 50€ more expensive than a one way. I was almost sure I did not use the return trip because I wanted to stay in Thailand permanent. Asked the refund, and they gave me 150€ back. So at the end, the total was 100€ cheaper than I had bought a one way ticket in the first place. Ask the refund policy of your flight company !
, the Non imm. OA visa is always issued by the Thai embassy/consulate in y'r home country. So I thought you can use your regular (many times mandatory) local healthcare insurance ?
. Officer NOT correct. Asking for the incountry non imm O (After tourist visa or visa exempt) the rule is to prove 800k฿ transfered INTERNATIONAL to a bank account in his name only. Then, with 30 days or less, he can ask for a year extension. If he wants to use the 800k฿ method only THEN it needs to be there 2 months before asking this extension.