I actually wanted to experience Korea so it was a byproduct. I didn't go there specifically to do DTV 🙂 I've even booked a Laos appointment in case I had trouble with Korean embassy
I've got DTV and already arrived and got stamped for 6 months. I did it online at section called DTV and I probably wouldn't have to send them all those documents for just a tourist visa. You can email embassy yourself like I did.