When it comes to describing theatrical events, there are numerous synonyms for the term "gala performance." One alternative is "opening night," which refers specifically to the first public showing of a production. Another term often used is "premiere," which connotes an air of exclusivity and glamour. "Red-carpet affair" is another popular option, highlighting the prestige and VIP status of guests attending such events. "Big night out" or "spectacular showcase" convey a sense of energy and excitement, while "charity benefit" or "fundraiser" emphasize the philanthropic mission of certain events. Ultimately, the choice of synonym depends on the tone and message intended by the speaker or writer.