Maegan and Mike did a whiskey tour & tasting date here early on and became avid Sagamore fans. Tours are about an hour and cost $20 and would make for a perfect early afternoon activity to learn about Baltimore's whiskey history before the wedding.
If you are flying into BWI and want to start your weekend off with a fresh pint, the Guinness Brewery (their only brewery in the USA) is just 4 miles from the airport. You can take tours or just enjoy a range of fresh, unique beers in indoor or outdoor seating.