Grand Mardi Gras Parade on Saturday at 2 p.m. Fun tip: If you love the Mardi Gras floats, head to Spring street early to get a closer look! The street is closed, but be mindful that floats are being pulled in and out, so be on the lookout. Downtown parades typically last several hours, so pack your patience, get a good spot, and be ready to hurry up and wait. Being earlier in the parade route ensures seeing all the floats the quickest, versus towards the end, where you have to wait for them to make it through.