2/21 DTW-MSY 6:30 AM - 10:25 AM
2/21 MSY-ATL-TPA 7:00 PM - 11:39 PM
2/24 TPA-MEM-DTW 6:30 AM - 11:26 AM
I wouldn't do it...you'd get to the CBD/Quarter maybe by Noon, have to find somewhere to put your luggage, then find a cab by 3:30 or 4pm. Lines at security at MSY during Mardi Gras are very long.