Hi there,
Taking a domestic flight Bangkok to Nakhon Phanom, then crossing into Savannakhet by land.
Is it possible to get a re-entry permit at the land border into Savannakhet?
Or to get the re-entry at Don Mueng in the international terminal before the flight?
If neither option is possible, I presume the only other option is Chaengwattana?
TLDR : Answer Summary
The post inquires about obtaining a re-entry permit when traveling from Bangkok to Nakhon Phanom and crossing into Savannakhet by land. It was clarified in the comments that re-entry permits are typically not available at land borders for foreigners, and the most feasible options are to secure the permit at Don Mueng Airport before departing internationally or at the local immigration office that issued the visa extension.