It happened to our table of 6 in ABQ at the tex-mex themed bar a couple of years ago.

After we ordered our fourth round of drinks, we were informed that further service would not be forthcoming. This was over a time period of 2 hours.

Maybe had we been ordering beer, instead of those terribly difficult to make margarita's, this might not have happened ?

I'm all for dealing with obnoxious pax who've exceeded their limits in the lounge or other public places, but this was not the case here at all.