I think they are under staffed. The servers are always not there when you need them.
But it's Korean BBQ and there's not that many of them around here. We got one of the combos and it was around $35 for 2 people. Comparable to what you can find in California except for 1 thing. It's not all you can eat. It's just one plate of meat.
Having experienced what awesome AYCE Korean BBQ is ranging from $9.99 to $19.99, I say this place is no good given the amount of meat and the lack of service.
Given that AZ has nothing besides 3 to 4 Korean BBQ places in the entire valley area that spans an hour drive from one end to the other, this is ok. But probably not worth your money.
I didn't try their sushi or their karaoke service but I'm sure one day, I will.