I will be traveling to Vietnam on August 18 and have an evisa for 30 days. I then plan to travel to Thailand where I have a Thai wife and 12 year old son. Will I be able to apply for a Non-immigrant O visa at the Thai Consulate in Saigon?
TLDR : Answer Summary
The user is traveling to Vietnam with a 30-day evisa and plans to apply for a Non-immigrant O visa at the Thai Consulate in Saigon due to having a Thai spouse and child. Responses confirm that it is possible to apply, advising to make an appointment ahead of time.