Hi Lee (Hey, Lee addressed the original post to moi),
Good to hear from you.
Au contraire to the implication of your OP, I feel strongly that as many Americans as possible should wear shorts in Europe, to further the national interests of the United States.
(ahem, Canadians, please excuse us for a moment, this is a US thing)
Now Lee, I know you join the rest of us in wanting our country to be #1--and wearing shorts in Europe will help to keep us #1 in the Worst Dressed Tourist Category, where, as you know, we've been at the top of the heap for several years now, according to surveys.
And as I think you're aware, the wily Brits keep trying to edge us down into 2nd, with their sandals with white mid-calf sock strategy--so we all need to do everything we can to keep America #1.
So, keep up the good work, Lee!(and keep havin' fun, too). We'll love you here, even if you don't wear shorts--but if you love your country, and I know you do, then try to wear shorts as much as possible, we have an image to maintain.