Fiesta

‖n. [ Sp. See Feast, n. ] 1. Among Spanish, a religious festival; a saint's day or holiday; also, a holiday or festivity.

Even . . . a bullfight is a fiesta. Am. Dialect Notes.

Some fiesta, when all the surrounding population were expected to turn out in holiday dress for merriment. The Century. [ Webster 1913 Suppl. ]

2. an organized series of acts and performances.
Syn. -- festival, feast, fete. [ WordNet 1.5 ]