The group’s 18-date residency kicked off on May 6 in Las Vegas At the No Doubt Experience in Las Vegas, an immersive pop-up staged by Vibee, a tattered itinerary from the band’s first tour lists a show at the Shark Club in February 1992. That venue would close five years later, but No Doubt lives on, returning to Sin City three decades later for an 18-date run at the Sphere . Back when they were just an up-and-coming band from Orange County, they pogoed around the stage singing about donuts, pizza, and pancakes in “ A Little Something Refreshing.” Today, bassist Tony Kanal is at a loss for words. Speaking to Rolling Stone exclusively after opening night at the Sphere , the 55-year-old musician got emotional at their mammoth comeback. “It’s so much to process,” he says. “For the last eight months, every waking moment was committed to putting the show together, rehearsing, working out, merch ideas. It’s been non-stop, so Wednesday night was so emotional and joyous.…