Dining etiquette is a set of rules that govern proper behavior at the table when eating at home or in a restaurant. Some key elements of dining etiquette include seating positions at the table, understanding the proper table setting and order of utensils, eating slowly and with good posture, using napkins correctly, avoiding cell phones and controversial topics during meals, and expressing gratitude to the host after the meal. Dining etiquette helps make a good impression at business meals and social occasions.