Hey all! Just thought I'd share an experience because the entire time it was happening, I was thinking, "Man, if I pull this off, it goes against all Helpline advice!"
My husband and I were set to go from Stuttgart, Germany to Budapest this weekend with a couple we're friends with to celebrate some birthdays, flying GermanWings. (By the way, if you ever have a choice between RyanAir and GermanWings, choose GW. I forgot that budget carriers don't have to be awful!) The day before we left, I went to our usual spot where we keep our passports - and they weren't there. Cue tearing our apartment apart for over three hours in a panic. We did a day trip to Strasbourg after Christmas to see their Xmas Market, and I'd brought them with me then - even though it wasn't necessary, I figured, better safe than sorry, right? Well, I'm pretty sure they were lost or stolen, although I have no idea how that could have happened (passports in a very narrow pocket in a cross-body messenger bag that's very hard to access without my knowledge) because they simply aren't in the apartment.
So no passports the night before the trip. What to do? We had non-refundable flights and hotel, and I know that I've NEVER been asked for my passport when traveling between Schengen countries, so...we did it. We got on a plane with no passports, spent 72 hours in a city with no passports, and returned to Germany with no passports. And it was fine. Semi-legal, actually - passports are not required by law for EU residents when traveling within the Schengen zone, just some form of legal ID. It's a little tricky for us because of the visa issue - we're here under the Status of Forces Agreement which is essentially our visa, proof of that is a sheet that is taped to our passport, so traveling without that wasn't, uh, ideal. I certainly wouldn't recommend it!
But obviously we're not in a Hungarian prison. I did carry our military IDs, U.S. Drivers licenses, and even our social security cards with us, and I had scanned pictures of our passport with me on my phone as backup in case we ran into any trouble. And we didn't check bags, I do think that most airlines here require a passport if you check bags. But as it was, we never had to show any form of ID the entire trip.
My point is, if we can do this ill-advised thing, you're probably much better off leaving the passport in your hotel safe or in your luggage at the hotel than keeping it on your person anywhere other than a money belt, because the chance of losing it/getting it stolen from a purse or pocket is much higher than keeping it secure at your hotel (or at home, in my case, when taking a train across a Schengen border).
Here's to smarter travel in 2014! I'm a little bummed we lost passports with stamps from countries that have since become Schengen countries. :( But I'm glad we didn't cancel our trip!