Hey All, I just arrived at DMK - I was not asked for proof of vaccination. BUT I almost did not make it on my plane back from Vietnam because Airasia was giving me trouble accepting my photos of my vax cards (I’m double vaxed). A couple that wasn’t vaxed didn’t make it through. Please call your airline ahead of time and check with them. They appear to be much stricter than Thai immigration (at least AirAsia).
Tldr; airlines strict enforcement on double vax, Thai immigration at DMK not strict as of today.