Of all the parades of Fiesta, none matches the King William Fair’s promenade in terms of sheer wackiness.

After all, where else can you find the usual marching bands, bike-riders and waving politicians intermixed with Chewbaca, three real Texas Longhorn steers and a trailer hauling senior citizens playing “La Bamba” on ukelele?

A highlight of this year’s parade: A crew from La Tuna Ice House, a popular Southtown establishment, dressed in the full regalia of the Cavaliers, a hallowed men’s fraternal and charitable organization, except for the addition of lacy red tutus.

It’s that wackiness — and the family-centered vibe of the King William Fair, now in its 50th year — that draws some 45,000 revelers to the street festival in the King William historic neighborhood.

“It straddles the line between the outrageous and traditional,” said Gilbert Lopez, who awaited the start of the nearly two-hour parade on what began as a cool Saturday morning. He and wife Olga and their niece Gina Chervinskis and her husband, John, ate breakfast at the nearby Guenther House before the parade, as has been their tradition for years.

John said he and his wife love the King William Fair because “it’s pet-friendly and family-friendly, a great place to bring the grandkids,” he said. “It’s clean and safe, that’s the biggest difference.”

Make no mistake, the daylong King William Fair, which over the decades grew from a one-block arts exhibit to a major Fiesta event, has all the fixtures of your typical Fiesta hoedown: beer, frozen margaritas, food heavy on the fat and sugar. There are arts and crafts vendors, live performances, dancing.

But there’s also a distinctly wholesome feel, as parents push babies in strollers and dogs decked out in Fiesta decorations amble up and down the tree-lined streets in the neighborhood just south of downtown, where stately Victorian homes and quaint cottages also display their Fiesta best. As parade-goers watched the promenade, folks watched from verandas and enjoyed private parties on manicured front lawns.

It was the first visit to the parade and fair for Laura Baltazar, who moved to San Antonio with her twins Vaughn and Will, now 8, from Southern California four years ago to teach at KIPP University Prep High School, located in King William.

“I like the feel of this,” she said, looking around at the crowd. “It has the small-town feel of the Fourth of July party in Coronado, California,” she said.

Her friend Tammy Johnson, who moved here from New York to teach at KIPP, agreed.

“It just feels cozy,” she said.

Each year the fair raises proceeds for the nonprofit King William Association, which since 2001 has donated close to $700,000 in grants and scholarships to local groups.

Editor’s note: This corrects the name of La Tuna Ice House.