Long drive, Bkk to Nong Khai George, you'd of been better and cheaper to fly to Udon. At Udon Airport there are deals for transport to Laos, or just as I used to do get a bus and stamp out of Nong Khai, stamp into Laos, straight back around the building and back to Nong Khai. Only thing with flying is you have to make time allowance if you book a same day return flight. Best flying from DMK.
I worked internationally for over fifty years and although I never needed any business accounts and I earned quite good salaries, not picking for a few Β£ or $ of interest a year I would of found it too much trouble to be bothered with. If your referring to tens of thousands of $ ,β¬, or Β£ I understand.