Once you've selected all your options you just tap once and send it off to the kitchen. They also had play screens by the entrance of the restaurant you could play little app games like bejeweled on while you waited for your table.
I really enjoyed this because it meant less trying to flag down the waiter for my next round. I think it's a great idea for restaurants that require multiple rounds or orders. I'm not sure it would be so practical at a place where you order one main meal.
Has anyone else seen this style of menu at a place other than a sushi joint? It's a lot of fun!