It should not be wiped plate cutlery in restaurants, whether luxury or ordinary just because considered bad etiquette. If that is not clean, it's new kit would be better.
Do not wipe the dishes, utensils in restaurants, whether luxury or just plain. It is considered bad manners If that is not clean, it would be better to exchange a new series.
Do not wipe the plate, spoon, fork, in a restaurant, no matter how simple, elegant or because it is considered bad manners. If that is not clean will change anymore.