I’m from England and one thing I’ve noticed on holidays to America is that there are very few small grocery shops that sell fresh produce except in places like New York or New Orleans. In the UK they’re quite common with a good range of fruit and veg and fresh meat. You have to go to a large out of town store in most places I’ve been to to get fresh produce, and the choices in service stations are abysmal (they’re not great in the UK but there are some healthier choices).
I’ve been to Las Vegas (good restaurants, not over big portions and a lot of healthy choices in restaurants), New Orleans (healthy food in restaurants but massive portions), New York (excellent choice, healthy food available, portion sizes ok, but stupidly expensive in Manhattan (Queen’s however.....)), Orlando (all chain restaurants, big portions and not many healthy options), Miami (nice restaurants at the Marina by the port), Carnival Cruise from Miami (food was dire) and Westerley RI (surprisingly the worst, only three restaurants along the entire beachfront, everything fried and massive portions. We ended up doing BBQ’s where we were staying (they had fixed gas BBQ’s) with salad and gravy).
I also find American bread far too sweet (what do they put in it?) and try to get rye bread, if not the 12 grain stuff with no HFCS in it. Also cheese product seems to be added to almost everything, which seeing as I dislike cheese, especially what passes for it in America, is a bit of a problem at times.