Your TM6 departure card has your outbound flight, but what if you change flights (and even destination)? (I'm on visa exempt + 30 day extension). My outbound flight is to Canada but for work reasons, I should go to Dubai instead. Do I need to go to immigration to fix my TM6 card? Thanks in advance for any helpful advice :)
TLDR : Answer Summary
If you need to change your outbound flight after entering Thailand, you don't necessarily have to visit immigration to update your TM6 departure card. You can simply write the new flight number on the card if it changes. It's also advised to wait until just before check-in to fill out the departure section. Some users suggest taking a photo of the TM6 card for reference, especially since it is often stapled into your passport, and it's important for 90-day reporting. Overall, the TM6's serial number ties into your arrival card, which is crucial for any future immigration processes.