Can a South African national receive a 30-day exemption on arrival at the Mae Sai border? He is currently on a 30-day exemption. His original plans were to get a 60-day visa from Laos, but it seems they are fully booked until mid next month.
TLDR : Answer Summary
A South African national can receive a 30-day exemption on arrival at the Mae Sai border, provided they have not already taken advantage of two 30-day visa exempt entries by land in the same calendar year.