A lavish celebration is an event that is extravagant and luxurious. It can take many forms, such as a JAMBOREE, GALA, or fete. A JAMBOREE is a large gathering of people for entertainment and socializing, often with music and dancing. A GALA is a formal event, usually with dinner and entertainment, to celebrate a special occasion. A fete is a festive outdoor event, typically with food, music, and activities. All three of these terms describe a lavish celebration.