Hi guys,
I will be flying into Bangkok This Sunday with my US passport which will give me 30 days entry. I will get a job teaching which I will change my VISA to a year long.

QUESTION:

Do I need an exit air ticket within the 30 day period for when I enter Sunday? I have never been asked for one before on my holiday stays. My luggage does not say I will be
staying an extended period, so won't raise suspicions. Any advice will be well taken.
Thank You