Time to catch 6:35 Udon flight after vientiane pick up?

[BradT12]

Hi guys, I've just dropped off my passport and tourist visa application in Vientiane today (3rd from there), and I think I've made a mistake in scheduling my flight time back to bangkok from Udon Thani tomorrow (flight leaves at 6:35 pm).

In the past I'd always had a relatively low or decent queue number, but I hadn't been here on a Monday and it was very busy today, so I got a queue in the upper 400s. 

Despite having a high number, I was out of there by 10:30, so if it goes the same speed tomorrow then I think I'll be fine as far as time goes, but I can't remember whether the pickup day moves faster or slower than the drop off? Or is it about the same? 

Refardless, do you all think I can make my flight from Udon at 6:35, or should I perhaps start arranging another way to get home at a later time?

 

P.S. On the pick up paper with my queue number  I was given after dropping off my passport, I noticed after I had already left that it says in red lettering "your address must be correct or visa will be rejected". I put my correct address, for example something like "casa condo, #502, ladprao 15" but I forgot to put "Bangkok, Thailand". Anybody know if that will be a problem or am I sweating over nothing? Feeling pretty silly today! 

Thanks!