Haters will hate mate. You have 100% support on here, you have been 100% helpful to me over the many years AND I see much appreciatoin for you from the group, always. Dont Quit. Take a Thai Buddhist stance, let it pass, all is well my friend.
If applying for the 60 TV online then there will be fields in the application such as "Confirmation of lodgings", "Flight Number", "dates", "Proof of UK residency", "proof of finances", "ID card of invitee to Thailand" (where applicable). etc etc. I make an A4 sheet with the words "not applicable + my name and DOB/Passport number" in bold marker pen/or printer, prior to completing the application online, and where they ask for information or proof I just upload the sheet I mention above. Good Luck, the process is quite straight forward for most.
The rule changes clearly state that it is the airlines responsibility to check the Vax status of all inbound to Thailand. They will be vigilant because it's at their cost if your arrive and cannot comply.
Thanks Gents. You are correct. The "visa" is actually an 'extension'.
Do you know, is the letter from the org essential or can a person just go to immigration to say they are concluding their volunteering? I think a letter is manageable, however if not essential required then obvs going direct is preferable.
Related question. Is Chiang Khong the closest crossing to Chiang Mai? We've only ever been across to Myanmar or over to Vientiane on previous runs, with Myanmar land closed Khong is interesting.