One of the posts above makes me ask a secondary question - should I leave my passport in the hotel (hidden in the suitcase, most likely, not out in the open, and I don't like using hotel safes) and just take a photocopy (I keep a PDF of it on my phone as well) or (as I have more commonly done) taken it with me in one of those wallets attached to my belt inside my pants? I like the idea of having it with me for an emrgency should I need it while out and about, but I'm not sure I've ever needed it.