The Wine Bin shows outdoor movies during the summer and they are playing the Avengers on July 6th! This is their description from the website:
The Wine Bin's outdoor summer movies run Saturday nights from June through September. Parking lot closes an hour before show time. The Bin offers a wine tasting before each movie and has coolers of ice to chill your beer and wine.
Bring a chair and a picnic. (and a blanket)
The Bin offers popcorn and bottled water to benefit Voices for Children of Howard County
So bring a big blanket, maybe a cooler of beer and some snacks, and watch the Avengers! :)