I don't understand: Report what? I live in Bangkok, going on a rare trip to Cambodia in 10 days. When I get back at immigration at DM, that's my 90-day report done, right?
A few years ago I lost my PP and left the country with a temporary PP without my departure card. Immigration took me aside and started searching for the number in their system of my arrival card, which corresponds with the deparure card, and they told me if they can't find it, I can't board and will have to go to Immigration the next day. They found it, have me another departure card to complete and let me go. But that was then...