Banquet

A banquet is a large meal or feast, complete with main courses and desserts. It usually serves a purpose, such as a charitable gathering, a ceremony, or a celebration, often preceded or followed by speeches in honor of someone.
Banquets have been used as a formal occasion for thousands of years. Royalty and higher classes have frequently thrown banquets for special events, such as birthdays, weddings, betrothals, and holidays. Some banquets are used to signing a treaty or agreements of some sort.
Business banquets are a popular way to strengthen bonds between businessmen and their partners. It is common that a banquet is organized at the end of an academic conference.

A luau is one variety of banquet originally used in Hawaii.

The Nei Mongol provincial government in China levies a tax on banquets.

Source: Wikipedia

See Also:
Restaurant
Restoran
Cafe