People who picnic along the public highway leaving a clutter of greasy paper and swill (not a pretty name, but neither is it a pretty object!) for other people to walk or drive past, and to make a breeding place for flies, and furnish nourishment for rats, choose a disgusting way to repay the land-owner for the liberty they took in temporarily occupying his property.
Emily PostCourtesy demands that you, when you are a guest, shall show neither annoyance nor disappointment--no matter what happens.
Emily PostThe good guest is almost invisible, enjoying him or herself, communing with fellow guests, and, most of all, enjoying the generous hospitality of the hosts.
Emily PostExcepting a religious ceremonial, there is no occasion where greater dignity of manner is required of ladies and gentlemen both, than in occupying a box at the opera. For a gentleman especially no other etiquette is so exacting.
Emily Post