I have some acquaintances who do a very involved War in Vietnam LARP with several dozen guys going out to Polish mountains for a week or two to pretend they're U.S. Military. It's very important to them, lots of attention to detail, lots of rules on how to stay in character.
It's fascinating to see Americans' reactions to these things. I don't think collectively Americans seem to notice the extent to which their culture has inundated the world, especially places like Poland where USA obsession is rooted in the 1980's and 1990's.