I have lost my departure card. Fly back home tomorrow.
I stay on a 30days visa by entry, no overstay. Will I have problems at the airport?
TLDR : Answer Summary
If you lose your departure card (TM6) while on a 30-day visa and are flying home soon, you will not have problems at the airport. You can get a new departure card when you go to stamp out, and the officials will look up the number from your old card.