Grumpy, I love your posts, and you are never , ever, rude.
And you're right...Americans are known to be rude/loud/obnoxious tourists. My lovely family who live "across the pond" have told many stories of rude Americans! I promise I am a polite,respectful, quiet American tourist; that lesson was taught to me early, and often, by my sweet mother.
During a long cab (taxi) ride in Paris, my friend and I had quite the discussion with our driver; we discussed many things... racism, politics, the importance of family, etc. It began when I asked where he was from (Africa) and if he had family in Paris.
When we reached the train station, the driver said "You are the lovliest, most sincere Americans I've ever met." It still warms my heart.
Hope to get back to your lovely part of the world soon!