My daughter and I used a groupon a few weeks ago for this restaurant. We too were surprised at the few people - yet having to wait about 5 minutes for a table. We were pleasantly surprised by the quantity and quality of food. We had enough food to take home for another meal for each of us. The waitress was very kind to help us pick out our entrees. The volcano roll is to die for with just the right amount of spiciness. The food was delivered to our table in reasonable time.
I don't really understand why so many people have rated this establishment so low when we loved the food. We gave it a big 2 thumbs up and plan to eat there again.