When I was in grad school, I did a clinical rotation at the Mayo Clinic in Minnesota over Thanksgiving. My fiancee (now wife) flew up to join me. My housing was actually a very upscale hotel that served a Thanksgiving buffet that the locals raved about and told me was a must do. OK, cool. I'm going to impress my girl. Except I'm from Alabama and my wife is from Louisiana. We're used to cornbread dressing, sweet potato pie, collards, gumbo, squash casserole, jambalaya, etc...
People in Minnesota don't eat that stuff. None of it. They eat stuffing, mince meat and pumpkin pie, yams, salted cod and pickled herring. We really tried, but it's the only Thanksgiving I remember being hungry afterwards. Definitely culture shock and a good laugh and memory now, but BLECHHH.