Guest speakers will address the public and media in front of the porte-cochere and fountain at the main entrance. The grand opening of the new Eagle Mountain Casino is today at 10 AM. Read more Eagle Mountain Casino celebrates Porterville grand opening today!. Read more Eagle Mountain Casino plans hotel and convention center -Ī few weeks after celebrating the May 9th grand opening of the new Eagle Mountain casino in Porterville, the Tule River Tribe is preparing plans to add a 250-room hotel and a convention. Decem-Įagle Mountain Casino is giving every guest a chance to win a share of its 'Slots Double Jackpots Million Dollar Giveaway'. News Headlines Eagle Mountain Casino is giving away $1 million in Dec.