Las Posadas The merchants of Olvera Street in downtown L.A. commemorate the nine nights leading up to Christmas with Las Posadas, a reenactment of Mary and Joseph’s journey into Bethlehem to find shelter. The annual tradition features a procession, hymns sung in Spanish and English, entertainment, the breaking of a piñata, and complimentary pan dulce and hot chocolate. Avila Adobe, 10 Olvera St., L.A. Activities begin at 6 p.m., procession at 7 p.m. Ends Dec. 24. Free. (213) 625-7074. https://www.olvera-street.com.
Broadway Holiday True to its name, the musical revue “Broadway Holiday” celebrates show tunes and seasonal cheer. Musical director Neil Berg will be joined by a three-piece band and a talented lineup of Broadway alumni to perform favorite songs from “My Fair Lady,” “West Side Story,” “Wicked” and others, as well as a selection of holiday tunes. Geffen Playhouse, 10886 Le Conte Ave., Westwood. 8 p.m. Fri. 3 and 8 p.m. Sat., 2 and 7 p.m. Sun. $65 to $75. (310) 208-5454. https://www.geffenplayhouse.com
Winter Dance The centerpiece of CalArts’ Winter Dance presentation is a restaging of Trisha Brown’s landmark 1983 work “Set and Reset,” here rechristened “Set and Reset/Reset,” which features the institution’s most esteemed dancers and a score by Laurie Anderson. Also slated for the evening are excerpts from Barak Marshall’s “Rooster,” Daniel Charon’s “Juncture” and a new short piece from Rosanna Gamson, whose “Tov” premiered at the theater last spring. REDCAT, 631 W. 2nd St., L.A. 8:30 p.m. Fri.-Sat. $10-$20. (213) 237-2800. https://www.redcat.org
“Tron: Legacy” In lieu of the French duo Daft Punk playing live during “Tron: Legacy” with a 100-piece orchestra, Hollywood’s legendary El Capitan Theatre will give us the next best thing: a laser light show before each screening. OK, so it’s not vocoders or spacesuits from the band that scored the Jeff Bridges vehicle, but we have a feeling that lasers shooting around the theater will delight even the most steely of robot hearts. To further entice your electronic soul, one person will win a pair of tickets to Disney California Adventure Park before every showing. Daily screenings: 10 a.m., 1:15 p.m., 4:30 p.m., 7:45 p.m. and 10:45 p.m. El Capitan Theatre, 6838 Hollywood Blvd. Through Jan. 20. $16-$18. elcapitan.go.com