As we say in the American Institute of Wine and Food, small helpings, no seconds. A little bit of everything. No snacking. And have a good time.
Basil Stag Hare tut-tutted severely as he remarked to Ambrose Spike, 'Tch, tch. Dreadful table manners. Just look at those three wallahs, kicking up a hullaballoo like that! Eating's a serious business.
Shh! Don't talk with your mouth full.
Speake not of a dead man at the table.
You're not allowed to put anything on a steak.
Good manners: The noise you don't make when you're eating soup.
Do not put chewed bones back on plates. Instead, throw them on the floor for the dog.
Don't dunk your nigiri in the soy sauce. Don't mix your wasabi in the soy sauce. If the rice is good, complement your sushi chef on the rice.
Oh, I'd never put my elbows on the table.