Do I need to show onward travel proof for a 30-day visa exemption in Thailand?

While it's not always required to show proof of onward travel for a 30-day visa exemption in Thailand, it can be requested by immigration officials, especially for individuals with a history of frequent entries. Some travelers have reported being asked for an onward ticket or accommodation details, while others noted that airline staff often check for these documents prior to boarding. It's advisable to be prepared with potential proof, such as an onward flight ticket or evidence of sufficient funds.