In a Japanese house, you take your shoes off when you enter.
There's always an area just inside called the GENKAN where you can remove your shoes and step into slippers before going further into the house.
Some rooms in homes and restaurants (and your hotel in Tokyo) will have a floor made of tatami, bound thin reeds made into mats placed side by side to cover the floor.
Always remove your slippers before stepping onto the tatami. Just socks, please. So do make sure to wear nice ones.
At Matsuya, you'll wear your shoes into the restaurant, then remove them before stepping up onto the tatami floor of the room where we'll have dinner.
Matsushita-san is the owner and the sushi chef. He will be watching. His knives are very sharp. Behave.
Actually, he's very good-natured. His friends all call him Panasonic; what we know here as Panasonic is Matsushita Electric in Japan. It only seems fair that what's known in Japan as Matsushita-san should be Panasonic here.
We don't expect you to like everything you're served (but you might!) We do expect you to TRY a little of everything.