That's what I was saying - we've never had to wait for a table on NCL, except twice that I can remember. One time was because we wanted a specific table by a window, but it was only a couple of minutes till we were seated. The other time we just chose the wrong time to go to dinner and there was a short line, but that was unusual. Other than that, usually we just walk right up and got seated right away.
Pretty much the same as it is on any ship we've ever done anytime dining. In fact, I was just asking my wife about it and only once did we ever have to wait for a table - it was on Holland America. We only had to wait about 5 minutes, but the matre'd felt so bad about it, he gave us 2 glasses of champagne while we waited and then brought another 2 glasses after we were seated for dinner. And then, to top it off, we received a tray of chocolate covered strawberries in our cabin the next day with a handwritten note apologizing again for the wait. Thought that was pretty awesome service!