EMBED More VideosMorongo Casino Resort & Spa 49750 Seminole Dr. An interesting buffet concept like no other, and.Celebrity chef Fabio Viviani is the culinary mastermind behind The Marketplace, a new take on the all-you-can-eat buffet at Morongo Casino. We’re here at Morongo to try out the newly opened, The Marketplace buffet by Celebrity Chef, Fabio Viviani.