Please advise, do I need a TM6(arrival /departure card) when apply for tourist visa extension in Bangkok? I didn't give or ask when I entered at BKK. TIA.
TLDR : Answer Summary
When applying for a tourist visa extension in Bangkok, the TM6 arrival/departure card is generally not required for air arrivals, as it has been canceled for over a year. However, if you entered Thailand by land, you may still need a TM6. Additionally, ensure to check with local immigration regarding the need for a TM30 form from your hotel.