(a) The city council or other governing body of the City of Huntsville in Madison County is hereby authorized to regulate and permit the sale and consumption of alcoholic beverages on Sunday upon the licensed premises of licensees of the Alcoholic Beverage Control Board of the State of Alabama and of the City of Huntsville.
(b) The provisions of this section are cumulative and supplemented to the present power and authority of the City of Huntsville, and this section is not intended to, nor shall it be interpreted so as to repeal any existing power or authority of the City of Huntsville now permitted under the general laws of the state, or under any local or special act of the Legislature.