Luggage sometimes gets lost. Make sure you can provide a precise description of your luggage and its content. Keep a description of each piece of luggage with its content with you at all times. Extra set of luggage keys Plenty of camera films. They might be more expensive abroad.
Diarrhea is a common problem among visitors to new countries.
Do not overeat before and during the flight. This aggravates jet lag. Do not watch the movie if you should be sleeping. When you arrive at your destination, follow the schedule of your destination. During the flight, skip breakfast, sleep instead.