Oh yeah food culture is very different over there. Like, in Norway it's not common to go out for meals on a regular basis, in the UK it's a little more common, but in the US everyone seems to do it all the time and it's because it's actually affordable for many. Plus you get so many options, we went to a diner once and I ordered a standard breakfast with eggs, toast, hashbrowns and bacon. When I told the waitress she gave me options for everything, like how I'd like my eggs, if I wanted my toast to be rye, wheat, sourdough or something else, did I want fries instead of hashbrowns, sausage instead of bacon and on and on. In Europe you might get a couple options, but if the menu says 'eggs' they usually mean fried (and there's only one type of fried), and they'll specify if the eggs are scrambled, you don't get to choose.
Oh and free coffee refills. My favourite thing about America, seriously.