Is it a misprint, or meant to be some sort of circular story telling? Being as I read it first, I get the impression that the denizens of the bar are there for all six books.
Circular, yes. Each volume ends with the beginning of the next volume, and the final (Pike) volume ends with the beginning of the first.
Which is kind of disturbing, because it suggests that the denizens of the Captain's Table are trapped in a neverending time loop.