What issues could arise when using visa exemption at the ticket counter for flights to Thailand?

Travelers flying to Bangkok using a visa exemption may face challenges at the airline ticket counter, particularly if they lack a return or onward ticket, or if there is confusion between visa on arrival and visa exemption. It's advised to have proof of visa exemption, such as screenshots from the embassy or the airline's website, to avoid misunderstandings with airline staff. Some users reported no issues when flying via Japan Airlines, while others experienced ticketing problems due to outdated rules in staff memories. Keeping copies of official documentation can help prevent delays.