Alcohol Laws For Mississippi
ABW > 5% wine and sparkling wine sold in state-contracted stores which are open from 10:00 am until 10:00 pm (Closed Sundays) statewide. Beer and light wine (ABW < 5%, ABV < ~6.3%) sold in convenience stores/supermarkets. Beer and light wine (ABW < 5%) may be consumed by persons age 18-20 with parental supervision. Governor Phil Bryant signed a bill permitting beer with 8% ABW/10% ABV on April 9, 2012. The bill went into effect on July 1, 2012.
No sales on Christmas Day. No state open container laws. Complimentary alcohol all day and night in coastal casinos.
In most counties, alcohol cannot be sold on Sundays. There are many dry counties in which it is illegal to possess alcoholic beverages, though some cities within dry counties have voted in beer sales.
Nope. Where do you think you are, Bourbon Street?
Unfortunately, there are some restrictions here.

Beer
Wine
For everything else, you'll just have to go to a damn liquor store. Like an animal.