I arrived in April 3rd. On the Test & Go I put 90 days for length of stay and purchased insurance for the same. I do have a departure ticket. Absolutely no problems. I was stamped and passed through immigration. They never requested proof of a departure flight. Just date. There were others at the gate filling out visa forms. Maybe it has to do with your origin of your country's passport. We are US citizens.
So when we fly in from Samui go to immigration and show them the flight out and the would give extension? Should I trust this or change all my flights. Plus I see now that most of the flights are filled and dates would move up 3 to 5 days.