Well, I always go to restaurants alone too.
I cannot fathom it, do you sit there waiting for your order staring at other people eating? That would make me a little uncomfortable. I honestly don’t think I’ve ever seen someone sit by themselves in a restaurant. McDonald’s maybe but not a proper restaurant.
Not that I'm a pessimist, these standalone releases are answering questions nobody asked. Episode IV already had enough exposition to tell about the Death Star, how awesome and antihero Solo was (until the special edition ruined that), etc. Especially as "Rogue One", which takes place just before ANH, is quick to upend all the continuity ANH relies on. But it might explain why Vader seems comparatively lethargic in ANH as he was just all manic-hypersquirrel all around in RO (despite sounding 40 years older in RO.)

