Mukesh Ambani prepares for the wedding of his son this summer, he’s expecting billionaires from around the world, heads of state, and Hollywood and Bollywood royalty to attend a three-day bash in the family’s hometown, starting Friday.The nearly 1,200-person guest list includes Bill Gates, Mark Zuckerberg, Sunder Pichai, and Ivanka Trump; Indian billionaires Gautam Adani and Kumar Mangalam Birla; legendary cricketer Sachin Tendulkar; and Bollywood celebrities such as Deepika Padukone, Shah Rukh Khan and Rani Mukherjee.They’ll be entertained by pop superstar Rihanna, magician David Blaine, and famous Bollywood singers.The party is in Jamnagar, a city of around 600,000 in a near-desert part of Gujarat state. It’s the family’s hometown, and the home of the main oil refinery of their business empire, Reliance Industries.