Kick off your three-day weekend early by hitting Party in the Plaza today at 99 Union Street (in front of the Four Seasons Hotel) from 12 to 3 p.m. ART Restaurant will be slinging mini burgers, kosher hot dogs, cotton candy, fresh lemonade, and more for $2 each. Pike Place Brewing will also on on-site, which should make it easier to deal with all the sugar-fueled kiddies.