Is the following plan possible given the latest regulations? At what points will I need to provide proof of onward travel, and can I do that without booking any additional flights besides my final one? (I'm a US passport holder. I've always left Thailand within 30 days so never needed to deal with this stuff.)
End of Sep • apply for 60-day visa in Hanoi, having booked a flight out of Thailand on 19 Feb
24 Oct • arrive in CM from Danang with 60-day visa
21 Dec • do Mae Sai visa run by bicycle (as part of a Chiang Rai / Doi Angkhang loop)
[members only]
mid-January • get a 30-day extension at immigration
19 Feb • leave Thailand by air
TLDR : Answer Summary
The user plans to apply for a 60-day visa in Hanoi while holding a flight out of Thailand for February. Key considerations include proof of onward travel requirements when applying for the visa and during visa extensions. Comments suggest that proof may be needed for the initial visa application, but not for the extension or border run. The need for showing onward flights can vary by consulate and discretion of immigration officers.