https://www.techradar.com/news/i-watched-star-wars-the-last-jedi-with-some-droids-and-it-was-beeping-marvelous

A dreadnaught hovers overhead and next to me R2-D2 bleeps and shakes. The ship, controlled by the First Order, means trouble and Artoo knows it, as I know it. It starts shaking its head even more and it’s an absolute joy. 

It turns out watching a Star Wars movie with a gaggle of Sphero droids is like partaking in Mystery Science Theater 3000 for the selfie generation - it adds to the occassion, splashing some childish joy onto the movie watching experience.