"Kaiten" is the name given to the conveyor belt-style sushi restaurants you'll have seen on virtually any TV programme about Tokyo. Take a seat, make yourself a free cup of green tea and take whatever you fancy. The price of the sushi depends on the colour of the plate (you'll find the price guide on the wall), and once you've had enough just ask for the "okanjo" (bill) and pay at the till as you leave. Simple, easy and delicious. The price of a plate varies from JPY100 (about 50p) to JPY600 (3 pounds).
I recommend "Kazu" in Ginza (Ginei Building 1F, 8-8-6 Ginza, Chuo-ku), near the Burberry store.
Nearest station: Ginza.
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