Mÿ friend (Belgium passport) is backpacking and spent about a month in Thailand, then went to laos for a few weeks, came back to Thailand (for a total of another three weeks) and is planning to go to Cambodia next. His return flight (already booked) is from Bangkok though. He is now worried that he won't be allowed entry a third time (first entry via airplane, second via bus, both on visa exempt). I told him not to worry as he has a booked flight and intends to take that flight but he asked me to verify. Any thoughts?TIA