I was in the fast track lane already because I was travelling with someone with a diplomatic visa. They had no problem having me in fast track, but still got the same questions as I would have in the 'normal' lane
Anonymous participant 987 to be clear I was not harassed. Immigration officers at the border were polite and professional. They were just surprised and confused about the conditions of this visa. They did not 'detained' me or anything more than reasonable.
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.