So... don't know if you know this, but American Tourists have a certain reputation around the world. Should this reputation offend you in anyway, look away now!
Story 1: I was in a lovely Brugge Chocolate shop. Free samples, good conversation, lot's of beautifully decorated options to purchase. The mother and daughter in front of me were buying a good supply, choosing each chocolate individually. Near the end, the mother asked the owner of the store, do you have any peanut butter one's? I snorted out loud, and the owner replied quickly - NO! I said, you are from America aren't you! (The faded jeans, white tennis shoes, the futile attempts to be culturally aware and not like they were from America had already kinda given this away). I hope I did not embarrass her too much, and she softened a little when I said "I'm from America too". They don't do peanut butter and chocolate here... She really did want Europe to think well of America!
But then it's my turn!
Story 2: I was checking into the Eurostar to go through the tunnel. My bar code wasn't being accepted. My parents were already through. I asked for assistance, and was told my ticket was for 7 this morning, not for this evening. Oops. I waved my parents on and told them I'd catch them up at some point. I line (queue), and I line (queue), the agent calls headquarters... sends me to a particular gentleman who can probably help me. I see his female co worker free, and went to her. She said she could do anything he could do - to which I leaned in and said, you can probably do it a little better too right!? To which she said "of course - I am woman". I explained that "I'm American, and we don't understand the 24hr clock very well" (that's military time if you are still reading my dear American friends). "I'm really sorry, I feel so foolish in a foreign land!" I got a free ticket right there on the spot and got on the same train! Phew!
Don't pretend to be French in France, or English in England. Don't pretend to know more than you do. But try some humility. Try being real, honest, kind. It will (more often than not) get you through a lot.