Hello Momo,
Im sorry to say that your agruement about the second drink on EI flights is probably one of the most pathetic arguements Iv ever seen in these forums. And comparing the Irish to the Americans, especially regarding our alcohol culture is also a blind shot.
If your old and big enough to fly in an airplane on your own then your old and big enough to accept or decline that extra drink. And perhaps that arguement should be said about most full service airlines and not just single out EI!