Long wait to be seated. Once you're seated, you may end up using some other customer's back like the back of your own chair...or worse, you could be seated back to back with a BABY IN A HIGHCHAIR! I've never been seated so closely to other patrons. That takes away from my experience in a restaurant right off the top.
The sushi was good and tasted pretty fresh. That waitress was somewhat hard to understand, she appeared to be very, very shy. Luckily, in this restaurant any of the waitstaff that passes you by will refill your drinks or place another order for food.
I know someone who was followed out the door for not leaving a tip. His waitress ran outside and yelled "was the food not good, was the service not good?!". I've never heard of this happening anywhere else before. And to my recollection, he stated that the answer to one or both of those questions was "yes".