First DTV stamped at the suvarnabhumi airport. The IO was efficient and didn’t ask anything.🫡 I hope this experience could give everyone a peace of mind as long as you prepared your passport, visa paper, boarding pass and submitted your arrival card ( I used THIM the newly introduced official app. You don’t have to show the qr code as it is straight to the system and the officer can view it from the monitor. But of course you should at least screenshot it just in case.)