Engage them in quiet activities, such as reading books, etc. Lack of exercise is one of the worst aspects of long-haul flying. Do stretching exercises in your seat, especially for the legs, go for walks up and down the aisle. Remember that traveling to high altitudes for ski vacations may take some adjustment. Upon arrival, drink plenty of liquids, restrict vigorous activity for the first day, and avoid alcohol and caffeine for the first twenty four hours.
Altitude illness can spoil a vacation, causing nausea, headache, and difficulty breathing.
Tour guides, leaders and bus drivers should be tipped. Don't pack anything fragile, valuable, or perishable. Money, jewelry, valuables, prescription drugs and important documents such as your passport should be carried with you. Leave all your expensive jewelry and furs at home or in safe storage. If you lose your passport, when abroad, go immediately to the United States Embassy.