When Becky Pedroza began planning her wedding, she imagined a celebration as vibrant and free-spirited as her relationship with Erik Revelli. At their wedding in May 2023 at Rimrock Ranch in Pioneertown, Calif., the Atlanta couple bypassed the usual wedding routines: no mother-son dance, no bouquet toss and absolutely no “Here Comes the Bride,” a song also known as “Bridal Chorus” by Richard Wagner. Instead, Ms. Pedroza walked down the aisle, flanked by her parents, to “She’s a Rainbow” by...