The 67-story hotel-casino, which is under construction and slated to debut in the fourth quarter of 2023, will feature a pillarless ballroom spanning more than 105,000 square feet, one of the largest in Las Vegas, according to an announcement this week that provides new details about the resort’s meeting space and a new batch of project renderings. Cannon/Las Vegas Review-Journal) Southern Nevada’s convention industry still climbing back from the pandemic, Fontainebleau Las Vegas owner Jeffrey Soffer wants the long-planned resort to be a hub for conferences. A crane works at the under construction Fontainebleau Las Vegas on the north Strip Friday, Feb.