With all New Orleans Mardi Gras parades canceled in 2021, Nola.com presents a virtual celebration of Mardi Gras. Mardi Gras for All Y’all is a three-day virtual event featuring iconic artists, chefs and personalities at famous New Orleans venues including Mardi Gras World, Antoine’s, Dookie Chase’s, and more. Scheduled to appear are Archie Manning, Hoda Kotb, the Preservation Hall Jazz Band, Chef Emeril Lagasse, and Grammy Lifetime Achievement Award Winners Leo Nocintelli and George Porter, Jr. of The Meters. Watch…