My parents just bought tickets for 32 days in Thailand. I know what to do about it once they get here. I'm not worried about HERE. *I need to know if/how they can board the plane in USA without showing they will leave the country within 30 days.* Last time that I tried boarding in USA without a printed ticket leaving, they almost wouldn't let me board the plane. I had to show my work contract to convince them and even then, it took me like an hour to check in and verify. They were real sticklers that you have proof of leaving within 30 days. IF we leave the country, rather than extending their tourist visas, we will do so by land. So there's really no option of buying plane tickets just to prove they're leaving! Advice?