Non-Immigrant O Visa report
I tried to covert from a METV (6 month) to a Non-Immgrant O (spouse) visa at Wattana and didn't have much luck. I was given reasons for the denial that aren't actual requirements (need to be married for 3 months, no Thai bank account, home photos a little too small) and told I should "find someone to help me".
Anyway, made the run to Vientiane Laos and it was easy. Apply online once you arrive, go the office to pay your 2,000 baht fee, wait for the email with your visa. Would have taken just 3 days if it weren't for the consulate being closed for Songran, and the weekend.
Only needed half the documents, all PDF. 7 days total time. Easy. They'll want color copies of your marriage certs, and your spouses Thai ID with a signature and date at the bottom. It's a little work to get your files down to the 3MB limit.
I ran into a few DTV applicants at my hotel, they seemed to be happier with the process, and expected they'd have theirs in a day two as well.