We've been to Kuu a few times and enjoy their selection. For an AYCE place, the food and service have been generally good.
However, on our last visit, we got there and were told the wait was 20 minute which we were fine with. However, after sitting there for 45 minutes, we had not been seated yet. This normally wouldn't be a big problem, except that the owner (?) was talking to his staff in Chinese thinking we could not understand/hear. He was basically prioritizing the larger tables despite the queue that was forming in the front. After waiting 45 minutes, all the tables of 2-4 people were still waiting whereas all the larger groups who had come in later had been seated. Normally, I would give them the benefit of the doubt except that we actually heard this straight from the owner's mouth! We had asked them a couple times how much longer we had to wait and why others were being seated before us and they just kept making excuses. We ended up just walking out after hearing the owner say that because it was clear our business wasn't important to them. The worst part was they had a large table at the back that had been empty for the whole time we were there. I assumed it was a reservation but considering it had been empty for so long, they could have easily broken it up and seated all the people who were waiting.