If you're a retiree about to depart on a long adventure tour, the one thing you should have on you is a list of emergency contacts. Make a list of your doctors and their phone numbers, any close family member you choose as your emergency contact and then backups to those people. Don't scrawl it on a piece of paper, either; this is a serious document that you should regard as importantly as your passport. Type it up and laminate it, and put it in your wallet or purse. Make copies for your luggage, too. While you're on the trip, make sure to keep it on your person at all times.