You may have to show PROOF of your DTV Visa to airline staff on check-in for your flight âïļ to Thailand...even to the connecting airline staff. Or to the land border crossing entry Thai Immigration Officer.
Upon arrival into Thailand, show the DTV visa to the Thai Immigration Officer and look at the STAMP placed in your passport to be sure you are STAMPED in for 180 days.
he's supposed to be studying and attending classes. Be prepared for questions from Thai Immigration Officers upon his arrival into Thailand by air... avoid flying.