I've been here 3 & 1/2 years and can count on one hand how many times I've had someone make a rude comment or show that ignorance knows no boundaries! In those few situations, I found it was a case of someone not knowing I was American and using old stereotypes (which I think we ALL do to a certain extent. Noone is immune from stupidity) to make jokes that turned out to bite them in the A$$. In the most baffling situation (which was far too ignorant to repeat), I was too stunned to say anything but my british colleague nearly went over the counter to poke his eyes out in my defense! I think she was more horrified than I was!
I have lived and worked in both the city (London 2yrs in a bookshop) and country (Southern England- Hampshire/Surrey in a library and currently another bookshop!) & have found everyone welcoming and interested in hearing about my life back home in NY - even being interested in my opinions on some of the current events taking place (war, elections, etc!). I've had more people say how much they loved the states and how much they wanted to visit it than anything negative.
My own mother has unfounded worries that I'm having a hard time here by just being an American, but I believe her concerns are based on her own political and religious convictions. I'm the one living here and it is just not the case. I find that most people accept that the media on both sides of the atlantic are biased one way or another and I'm thankful that I'm not personally held accountable for the actions of government- which is where a lot of debate gets opened from. It's a tricky time in the world, to be honest!
The longer I live here, the more I realise just how important it is to be a citizen of the world. I try to take peoples comments with a pinch of salt and when they say "Well, America does *insert whatever comes to mind*" - I make an assumption that they aren't talking about my sweet Nana in upstate NY...or anything as specific which would conjure up defensive feelings. That quite a bit of the edge off comments which I don't think are usually intended to be fighting words.
I think it's a great experience to be able to live in another country- experiencing the nuances of another culture. I see the opportunity to be something of an ambassador! You know, I was never a wearer of flag/ americana type things but I still wear my favourite clothes from the US because I don't really like the styles of clothing here! I think as far as being loud, goes....well, my husband can tell when I've been talking to my family or friends on the phone. I'm from a very boisterous lot. It is a fact that I sometimes find myself being more loud than those around me. I *can* play "spot the American" very well and I wish there were cash prizes! I think it's just a cultural thing! Part of the great old variety is the spice of life thing! I've found most people agree.