Just don't be a dumb shit when you go to someone else's country and you will be fine. Every American should go abroad at least once in their life. Right now people don't really dig the U.S. so try to not stand out too much.
I was in some kind of restaurant where they served pizza near the Pigalle in Paris. I noticed they had pepperoni pizza so I got one. While I was waiting this guy from New York was having a fit and making a scene "I KNOW PIZZA, THIS IS NOT PEPPERONI, I'M FROM NEW YORK !" ... the loudest fucker in the entire place.
Don't be that asshole and you should be okay.
... by the way the pizza I got had a "sunny side up" egg in the center with churizo ? it was tasty