Transit information. Get your hands on as much information regarding your transit in a foreign (or even local!) airport. You will be surprised on the tiny details you have to get right to ensure your luggage and flights are connected! For example- Singapore transit lounges require your LUGGAGE TAG RECEIPTS (usually attached to your boarding pass or passport by check in). These must be stamped to ensure you bags go through. All of this information is usually found in the terms and condition pages of your PDF Itineraries sent out by the airlines. Dont be afraid to ask at check in as well!