The first time my husband and I went out of the country together, I waved my hands and said "Oh, we'll just get money out of the ATM machine in the airport." Of course, when we arrived, all of the ATMs at CDG were temporarily out of service. Whoops. We stomped from end to end of the airport to the other, snarling at each other, and they came back on-line in twenty minutes or so, while we were waiting in a long line at a money exchange booth. My husband, who never forgets any of my errors, has insisted that we bring a couple of hundred euros with us when we fly ever since. You're tired, sleep deprived, and anxious to get as far away from airplanes and airports as possible, so at least you have cash for a taxi and a meal. The "high fee" for a little bit of cash is really only a few dollars.