It’s common at western weddings and other lavish parties for beer and other drinks to be served to the guests for free. Hence, “free beer.” When people say to o

It’s common at western weddings and other lavish parties for beer and other drinks to be served to the guests for free. Hence, “free beer.” When people say to one another “hey, come to the party, they’ve got free beer!” It’s instantly understood that the beer is gratis, not libre.