Just want some peace of mind. Arriving Bangkok next Wednesday night, 3 day stay as tourist. I'm Aussie. I have no visa (not required). Do I simply show immigration my onward flights and they stamp passport and let me through??
TLDR : Answer Summary
As an Australian tourist arriving in Bangkok for a three-day stay without a visa, you need to fill out the TM6 Arrival/Departure card provided on the plane or before immigration checkpoints. Present this card along with your passport at immigration. You may also be asked for proof of onward travel or have cash (20,000 THB or equivalent) available, but it's generally a straightforward process if you have no complicated entry history.