At most wedding receptions, there are four types of food service (Domino's Pizza delivery is not politically correct!):

The buffet meal allows guests to line up and select their own food. Try to have both sides of the banquet tables available for guests to line up to minimize time standing in line.

You or your caterer may prefer to have one table of guests escorted to the banquet tables for the convenience of your guests.

If a large number of guests are expected, consider more than one series of banquet tables, or even "food stations" placed in various areas of the reception room.

A sit down, or formal meal usually consists of three or more courses. Guests are served by waiters or waitresses.

A cocktail buffet is often held for two to three hours in late afternoon. Finger foods and wedding cakes might substitute for a full course meal.

A tea reception is usually held in the early afternoon. Like its name implies, it consists of tea sandwiches and hors d'oeuvres.