This is one of the first, if not the first location in Charlotte. I visited a long time ago when they first opened and also recently. I had a good experience both times. The staff is really friendly and willing to help and explain if there is something you're confused about. They walk you right through it!
The buffet area was clean and organized. There was someone behind it constantly refilling and there for questions at all times. I went on Sunday when the opened, so there wasn't too many people yet. The line moved smoothly and I had a chance to fill my bowl extra high! You have to do that, by the way, pack everything in, because when it cooks, it shrinks.
I ordered double udon noodles and my meal cam out lovely. Would definitely recommend and come back. What could go wrong with build you own bowl?