Dining etiquette for utensils. Portuguese do not switch knife and fork. The knife remains in the right hand, and the fork remains in the left. When the meal is finished, the knife and fork are laid parallel to each other across the right side of the plate. If you put both utensils down on the plate for any real length of time it is a sign to the waitstaff that you are finished, and your plate may be taken away from you. Alternately, if you lay your cutlery down on either side of the plate, it means that you haven't finished.
Dining etiquette for eating bread. Bread is usually served without butter
Dining etiquette for your hands. When not holding utensils, your hands should be visible.
Dining etiquette for napkin use. Keep your napkin visible, and when you are finished with the meal, fold it first before putting it down on the table.
Dining etiquette for passing food. Pass all dishes to your left at the table.
Dining etiquette for the home. Allow the more senior members of your party to enter rooms ahead of you. Wait until the host indicates your seat.
Dining etiquette for paying the bill. Usually the one who does the inviting pays the bill. Sometimes other circumstances determine the payee (such as rank).
Dining etiquette for tipping. A 15 percent tip is usually sufficient in restaurants. Restaurants sometimes have the 15 percent tip already included on the bill.