I am just returning from Laos, I have a Non O Visa, multiple entry. I had to do my normal 90 day leave Thailand trip. On returning to Thailand after a couple of days in Vientiane, I entered Thailand. Got back onto my bus for Nong Khai. But I forgot to check my dates for the length of my stay, ah always 90 days. Oh oh checked only got 30 days, not the usual 90 days.
So I got off the bus and went back into the border crossing to see the officer.
It always pays to check your dates.
If it is not correct, smile and explain to the Immigration officer.
He fixed and altered the date to 90 Days, and he apologized too !
Thank You Nong Khai Border Crossing.