yes US passport. So the earlier you arrive the more likely you are of getting a number I assume? I'll be sure to check the calendar that week for holidays
The ask:thailand community, consisting of multiple Q/A groups with over 100,000 members, powers this platform. It is not an official government resource. Our members actively contribute to this resource, and while we strive for accuracy, we cannot guarantee its complete reliability. Assistance to travelers is provided as a community service.