And maybe a tip: if you are Dutch and have regular income like statepension (Dutch AOW) and/or other pension which exceeds 65,000฿ a month (in €), AND you have y'r Non imm. O already bought in the Netherlands, you can buy a so called 'visumondersteuningsbrief' at the Durch Embassy. Then you not need to lock up y'r 800,000฿ in the bank.
And indeed what Jan says, my extension is already 7 years 8th of january till 8th of january. It only changes e.g. should your pasport is only valid for 8 months or so.
It is 90 days later as your entry stamp. I came in 11 oktober, so could stay until 8 january. In december I made my first yearextension and got it from 8 january till 8 january following year. So nothing to do with dates on the original visa, besides you have to come in before expiring date of the visa ofcourse.
It depends how long you want to stay. If it's less than a year, the OA is nice. It's multi entry and besides the 90 day reporting, you have to do nothing. However if you want to stay longer, use a year extension, the O is better because no need of health insurance. You DO need a re-entry permit to keep the year extension alive. Ofcourse it's always good to have a health insurance but with many over here, it's tricky if they will pay.
I think I understand y'r question. If you have an onward flight, the airline and/or immigration must have a reason to refuse you. Should you NOT have an onward flight, the airlne is responsible to fly you out/back. If you have an onward flight, then the airliner is NOT responsible for y'r flight out/back. So then YOU have to pay that flight.
Brandon is right. But they want to attract more people to visit Thailand, so IF a visa kind is canceled I think it will take some time. And I don't know if it has anything to do with it, because I'm not an 'economics guy', it seems to work if I see the strength of the Thai Baht.
I don't know if a friend of mine used online check in with EVA, but he had to sign a paper at the check in counter that EVA was not resposible for a returnflight if he got refused entry in Bangkok. This was 3 weeks ago from Amsterdam to Bangkok. Calling them is always a good idea.