As research I made a moodboard of different layouts of sushi bars as well as sushi in general, which you can find on this link to my pinterest http://pinterest.com/sachaframpton/game-module-sushi-bar-inspiration/ (I have also taken a screen shot of a section of the board below)
I also have taken reference to Pixar's Monsters Inc, where Mike and Sully first meet Boo in the Japanese restaurant. Although it isn't a typical sushi bar with the moving belt, it holds strong reference to Japanese culture and the style and layout you would expect from an oriental restaurant.
I couldn't find any English film clips of the Sushi bar scene, but managed to find a Spanish version!? However language doesn't matter, as I was focusing on the visual style of the restaurant, and how the characters reacted in their environment.
I also found this slightly strange short animation on Vimeo created in a stop motion style, of a Japanese tappanyaki restaurant. Although the animation is a little jaulty and off in places, I love the simple and bright environment created, and the cute needle-felted characters.
I was also going to look further into how sushi and sushi bars have already been used in games, but there are simply too many to even mention. This topic is a surprisingly popular theme in online and moblie games, where often the players job is to serve sushi to waiting customers or prepare sushi to a recipe whilst being timed. This however is not how I intend my gameplay to be, and I am just wanting the sushi bar to be one area the player simply visits on their travels and can choose to stay and eat or simply walk by. This taken into account, I have chosen not to look into any games of a similar topic as I am more concerned with the style and feel of the game in this given moment.