Liquor stores in South Boston will close at 4 p.m. on Sunday, while bars must close early around 7 p.m. as well.

Presented by the South Boston Allied War Veterans Council, the Southie parade full of colorful floats, marching bands, bagpipes and dancing celebrates not only St. Patrick's Day, but also Evacuation Day, when the British left Boston during the Revolutionary War.

Boston Police said they're making changes to this year's St. Patrick's Day parade in hopes of preventing some of the problems South Boston saw last year.Earlier start timeThis year, the parade will start at 11:30 a.