(Sorry, venturing off-topic for a moment just in reply to The Rainbow's post ...)
I can't speak for my millions of fellow Europeans (
), but I certainly wasn't offended by your post! It did come across as a bit of a generalization that made me chuckle (thus my own reply to your post, about a page back), but I don't feel like you actually tread on any toes, so don't worry!
About your plans for a vacation in Europe: I would go ahead and do it, and I am sure you will have lots of fun. That said, I would indeed advise any American to expect less of the behavour that is considered polite where you come from, and not to be offended easily when encountering behaviour that you consider as rude - it is often just in the culture, and not meant to be rude at all!
Take the standing in line - you are completely correct, many mainland Europeans are no good at it, and I fear that we Germans (often to my shame) are the worst of them. It is honestly not meant to be rude - it is just that nobody ever actually expects anybody else to form a line, so everybody is trying to find a place near the front. I don't particularly like it myself, but there you go. A good way to go would be to not expect anybody else to line up, and just expect a general rush to the front. Just move forward firmly but without hurting anybody, and you will be fine
.
(And once you've had enough of that kind of behavour, be sure to pop over to Great Britain - finally some people who know how to stand in line!
)