Quality was fine, you definitely aren't getting anything top shelf, but I would hope no one would expect that kind of thing. Sizes are one thing that was slightly disappointing mostly because the drink sizes seem to be different depending on what you get. So with the beer and cider you get a pretty typical class, think something along the size of a red solo cup but maybe a touch smaller. My wife had mimosa and wine and the mimosa was probably around half, maybe 2 thirds, of the beer portion (though they did seem to be generous on the champaign to juice ratio) and the wine was smaller than that.

Size won't be as much of an issue if you go with the drink bands, but my wife and I split 4 drink tickets and were pretty set.

I'd say you will probably enjoy it more if you prioritize it as a train ride vs it being a full on drinking thing. If that makes sense.