They can be similar, but there can be differences too. You will be going to a different country where they have different saying, beliefs, and act and behave differently. The two are much more similar that it would be compared to other countries, but it was nice to have other Americans around to say, "this is weird," or "wow, I never expected that" (things like that). I'd say do some research about the culture online just so you are a little more prepared. I can't think of anything specific at the moment, but there were times that I would feel completely confused by people's actions. Hope that helps a bit!