Probably been asked a lot... I know that Nong Khai border run they don't ask anything but what about Mukdahan? I can't visa run this time the waiting list is 3 weeks in Vientiane and would like to avoid Nong Khai because my last 3 visa run was in Vientiane and even tho I got no warning doing a border run may trigger them or wtv. Can also be O'Smach that border have been good to me few time last year but everything change so quickly so i'm looking for current 2019 info. Thx :)