Every year, for two weekends in April, a small patch of desert in Indio, California becomes the hottest ticket in the country. Most people know it as Coachella, a once-scrappy music festival first held in 1999 that’s grown into one of the biggest festivals in the world. But online, thanks to the sheer amount of money poured into creator marketing, there’s a much simpler name for it: the influencer Olympics.  This weekend, an estimated 375,000 visitors will file in to see headliners Sabrina