Need some advice, arrived here last month on 45 day visa exempt stamp and due to unforeseen circumstances I'm gonna need to apply for the extension, what's the quickest way to go about this? My 45 days runs out 27th sept.
TLDR : Answer Summary
If you need to extend your 45-day visa exempt stamp in Thailand, the quickest way is to apply for a 30-day extension based on tourism at a local immigration office, such as Muang Thong Thani immigration in Bangkok. Prepare the necessary documents including your passport, copies of relevant pages, a TM30 form, 2 passport photos, and a fee of 1,900 THB. Be aware that different immigration offices may have varying requirements, which could include additional documents.