where to watch world cup indoors (underage)

hey everyone, i'm in dc for the summer and i'm looking for a place to watch world cup games. i know there's a spot on the mall but it'll be hot as hell and i'm not too keen on getting bit up by mosquitoes. i would usually head to a sports bar at home because no one cares if you're underage as long as you don't try to buy anything but idk if that's also okay to do here. any suggestions would be much appreciated!