I'm not normal. Not in any way, but especially not compared to your average Japanese personage.
I've taught hundreds of students, and I don't know of one who's gone to London without visiting Harrods. The female of the species inevitably spends a full day at the store, and regards it as the highlight of the trip. Just last week I talked to a father who's taking his daughter (a university student) to London. Their holiday is 5 days: 2 days travelling, 3 days in London. Day 1: Harrods. Day 2: some Harry Potter theme park thing somewhere. Day 3: shopping for omiyage. Then back to Tokyo. I give up. What's the point of a tour like that?
Neither has one student ever praised London's food, which is, to the Japanese palate, the worst in the world.
Reads books. Peruses websites. Stares at maps. Considers limited time. Harrods? Meh. Let's rather go to Highgate Cemetery.
Reads more books. Peruses further websites. Drools over maps. Considers limited time. Cheese cheese cheese scones scones scones clotted cream clotted cream clotted cream. Pubs. Pubs that serve gin and tonic. Pubs that are centuries old and hosted the world's greatest writers. Bacon! Most vegetarian-friendly city in the world. (Oh shut up. Bacon isn't meat. It's what I've been dreaming about for 10 years.)
Why? Why do Japanese tourists think British food is awful? What do they eat when they're there? Heh. They're probably unhappy because they can't eat Japanese rice three times a day.