Depending on where you come from, sushi is either available everywhere, or it is a rare delicacy. In Japan, it is both.
Yes, sushi is expensive in Japan, especially in the more upwardly restaurants, but there are still less expensive options if youwant to enjoy the popular Japanese treat (which isn’t by any means the most eaten food in Japan, even though it’s available everywhere, even in convenience stores and super markets).
Conveyor belt sushi (or (“回転寿司” -> Kaitenzushi, previously mentioned in this post) is the type where you pick the sushi plates off a conveyor belt and pay at the end based on the number and the value of your plates. This type is considered a cheaper sushi option, especially with the popular all for ¥100 style shops (Yes, they have this type of shops even in restaurants. the ¥100 coin seems so popular.) Many of these shops have some special dishes that you can order for more than ¥100, but your experience can be as good without those dishes. Of course you should note that the quality and size of the sushi may vary, but the freshness is unquestionable.
Some shops have booths for groups, but most of time people sit right at the belt like the picture above. And the chopsticks are in that box (Which is something regular thing there. It looks like no one takes them home.)
So, the poster behind the conveyor shows the types of sushi served in the place, with the last raw usually depicting the different colors of plates and their respective values.
The tap like thing is actually a hot water tap for making green tea (which is free) you add a small spoon of the powdered green tea, and then fill your cup with hot water.
Almost all conveyor sushi shops have these digital menus, since the kitchen isn’t visible in most of them (but there is one I like where you can see the chefs working from your place and it doesn’t have these screens.) You make your order, then in a couple of minutes it arrives on another belt. At this particular shop where the photo was taken, once you take that special order you have to press the green button. This screen is also used to call your check at the end of your meal.
At Kura Sushi, you use the opening under the white arrow (in the picture above) to dispose of your dishes, and when you press the check button at the end the number of plates appears on the screen.
Of course you could still go to one of those nice sushi places if you have bucks to spare, or if you think that this isn’t a Japanese enough experience, or for whatever reason you want. But for the rest of you, this is still an amusing experience (bonus points if you like sushi)