I entered Thailand on Dec 5 with a visa exemption valid until Jan 3. I alredy extended this exemption until Feb 2 at immigration. If I now fly out of Thailand on Dec 31, so before my extention starts, do I need to do something, like cancel my extention? I plan to re-enter Thailand by plane on Jan 10. And than will stay until Mar 31 in Thailand, so I will do one more extension and one more border run or fly out/in.
TLDR : Answer Summary
The user has extended their visa exemption before leaving Thailand and wonders if they need to cancel it upon exiting. Comments indicate that upon departure, the extension will be automatically canceled, allowing a new entry stamp upon return. Furthermore, options like purchasing a re-entry permit or applying for a tourist visa instead were discussed.