I'd seen TFA twice at the cinema and once on blu ray, but until last night with the rest of the family away I had never watched it on my own. So viewing 4 was a soloist viewing - and I loved it. Actually my fave viewing so far!
Lots of great detail to pick up on, from background aliens to the way the First Order seem to be differentiated from the Empire by the colour red (watching it again, seemed to spot red lights and red reflections all over the place). But also after 4 viewings you start to feel a sense of familiarity with the movie that's really appealing - that feeling when certain scenes start - wicked, now here comes 'this bit'.