I need to go to Tachilek from Mae Sai (Not for border run, but for business.) I am not vaccinated for CoVid. I have a 1 year visa in Thailand. My question is: will I need a reentry permit to cross over for a few hours? If so, can I get that in Mae Sai? Do I need a covid test? Does anyone know the actual requirements for entry and return?
TLDR : Answer Summary
When crossing from Mae Sai to Tachilek for business, you will need a re-entry permit to return to Thailand, which can be obtained at the Mae Sai immigration office. Vaccination status and COVID-19 testing requirements appear to vary, with some travelers reporting that checks are infrequent, while others have been asked for proof of vaccination. It's advisable to check the latest travel requirements before your journey.