Out of experience... When I went to Spain 2 years ago, I packed 3 copies of papers with all kinds of important info such as itinerary, emergency phone numbers and credit card phone numbers just in case you lose it or if you get robbed. I already had the numbers ready and knew where American Express had an office... It's algo a good idea to leave at home with someone you trust a few signed checks to your bank account just in case they need to wire you some money. I had my wallet stollen the 4th day of my 17 day trip and I was able to manage with a replacement AMEX and western union wire transfers. Always have copies of everything with you on your bag.. and your wallet. Never give out your passport... even if they ask to, instead give them a photocopy of it. Sometimes to rent the audioguides they will ask to keep your passport while you use it.. I gave them the copy and had no problem. Hope this helps!