I have honestly gave up coming to eat the Cowfish. The food is great but the restaurant refuses to take reservations and wait times are insane. Once you sit (average time waited for me was at a minimum of 45 minutes) then you will enjoy a great meal with an average service. I think the restaurant should start taking reservations that way everyone can enjoy their meal. Waiting for long it is not a good way to enjoy the great burger this place has to offer.
They have an app which you can use to place your name on the waitlist but the app is only available for Apple iPhone and there is no way to know how long you are going to wait. It is driven by the size of the fish. Really really stupid! And also by doing an app only for Apple, they are automatically excluding other customers to have the opportunity to put the name on the list as they don't take call ahead seating.
http://www.tripadvisor.com/ShowUserReviews-g49022-d1995590-r270157933-The_Cowfish_Sushi_Burger_Bar-Charlotte_North_Carolina.html#