Before you embark make copies of your passport, medical card, credit cards and travel itinerary. Give a copy to a friend back home and keep one set with you, separate from the real thing. Email any pertinent information to yourself through a web based email account so you can get it from any hotel or internet café if needed. Check in with the U.S. embassy when you arrive. I even keep $20 folded under the sole of my shoe for emergencies.