I just got my non-o 90 days. It took less than a week. I did get an agent to help me. I don’t know if that had anything to do with the speed of the approval. 
You can do it on your own, but I found the website very clumsy and difficult for me to add the necessary documents. Also, I’m an American citizen, and was in Philippines during the time of approval. 
Sounds like it’s working out great… Vietnam is awesome. I’ve been there many times. I love Laos. Only went once… But I have a feeling it’s going to get more and more popular.
So if that’s correct… And now I think it is… I don’t need to rush to get into Thailand. I’ll just go with my original plan and hope I get 90 days from entry date.
I gave them my flight number and date of December 3… And my non-o 90 day visa got approved yesterday… So they used yesterdays date (Nov 24) so my Visa will expire 90 days after this date
btw….. I got approved in four days, which was surprising. I heard it can take up to three weeks.