What are the rules and options for doing border runs in Thailand?

Border runs in Thailand allow tourists to renew their visa exemptions or stay durations by exiting and re-entering the country. Travelers can typically make two entries by land per calendar year but face no limit for entries via air travel. Discussions suggest land crossings require demonstrating possession of 20,000 THB, especially when entering overland. Alternatives like flying to nearby countries, such as Malaysia, are also mentioned to avoid complications. Suggestions for specific border crossing points, like Ban Laem over Aranyaprathet, are offered to make the process smoother.