Visa Question: I have a passport from the USA. I flew into BKK, from the U.S, on December 4th, and got a 30 days Visa on arrival. Flew out of BKK to Siem Reap Cambodia on January 3rd. If I take a BUS back to Bangkok on January 18th, can I get a 30 days stamp, plus do a another 30 days extension for a total of 60 days this time?
TLDR : Answer Summary
A US passport holder who entered Thailand on a visa-exempt basis can return after leaving and receive another 30-day stamp, plus extend it for an additional 30 days. However, it's important to note that entry without a visa by land is limited to twice per calendar year, while air entry does not have a written limit. To stay in Thailand longer, the individual could make multiple trips out of the country, ideally by air, to avoid complications.