Takeoff is 4 weeks away. From what I've read, I intend to inform my bank of our travels so we aren't block from our debit cards. Use the debit cards in Frankfurt ATMs to get a little cash at a more favorable rate than US banks. However, my connection in Frankfurt is a bit tight 1.5 hours. Should I exchange in U.S. before the trip to have 100€ or so on hand before landing in Eurozone? My goal is to be economical, but not so much so that we're inconvenienced after a long flight and trying to get to our next flight to Thessaloniki.