Update: I flew from Bangkok to Ho Chi Minh city at at 2pm on Wednesday, and fly back from Ho Chi Minh city to Bangkok at 6pm same day. The immigration process was smooth, no questions asked at Vietnam immigration and Thai officer only asked when I was going to Phuket. Thank you all so much for your support and help. Immigration can be a headache and I would've had a very hard time navagating this without you all.
thank you for the advice. thank God I'm doing BKK, hope they will be easier. Although it is quite obvious I'm doing a border run, flying out of the country in 2 hours and come right back, it is not against the rule, let's hope they see it that way.
Thank you all so much for the advice! So last night, I weighed all the options and with my online work schedule and deadlines, I I decided to do a border run by airline, which seems to be the least time and energy consuming. Taking a flight from BKK to Saigon tomorrow afternoon and come right back on another flight. Hopefully this will go smoothly, and thanks to everyone here, I have prepared the 3 proofs and thai pass.
Veep Lefeh are you talking specifically about me? I asked for advice with immigration in Chiang Mai a month ago, and I commented a thank you note with update at the time. On a general note, I agree everyone here is so helpful and supportive, and the least we can do is a thank you.
Thank you all for your great advice. I booked another ticket to Bangkok tomorrow and hopefully will be able to extend it in BK before it expires. Appreciate all your help!
yeah that makes sense, I figured it would be best if I go to Bangkok tomorrow too, just kinda a hassle to change plans all of a sudden. Thank you for the advice!