Actually, this is good advice for just about any man at any public event:

Taking your drink with you into the men's room and holding it in one hand while you use the urinal is rather tasteless. It is all the more tasteless if your drink is precisely the same color as a urine sample, and in exactly the same kind of cheap plastic cup that a doctor would provide. I don't know whether this particular sample was beer that had gone flat, an unusually yellow shade of 'white' wine, or some kind of mixed drink -- most likely the first, since there weren't any ice cubes --, but thanks a lot for the involuntary mental image, stranger.

Otherwise, the Baltimore Lyric Opera's production of Don Pasquale was quite good. It was not until well into the third act that I realized one of the best things about it: a total absence of Eurotrashiness in the production.