When I arrived at CMX immigration did not give me my TM6 back and I didn’t notice until after I had left the airport. Now I need to extend my visa free, does anyone k ow if I need the TM6 for the extension.
TLDR : Answer Summary
The original poster lost their TM6 form upon arriving in Thailand and is unsure if they need it to extend their visa. The community advises that a police report for the lost document is likely necessary to obtain a replacement or to proceed with the visa extension. However, there are mixed opinions, and some shared experiences indicate that if one's details are already in the immigration system, it could simplify the process.