More Slidell Parades ... Follow link for parade details. Mardi Gras Me! - Create a Mardi Gras photo for Facebook and MySpace! Krewe of Mona Lisa and Moon Pie Mardi Gras Parade Parade City: Slidell (St. Tammany Parish) Map It Parade Date: February 14, 2009 Description: Parade Time is 7:00pm. The 200-member walking group offers parade-goers a perennially popular phalanx of elaborately costumed marchers and marching groups, dancing clubs and jazz bands, and, of course, a zany mix of grocery carts, bicycles and rickshaws for which the organization is known.