I did not see any trailers or read anything except for the two main characters' names and that less CGI was used. I feel like that's the best way to go into a movie you know you're gonna see.
I loved it. I agree with plenty of criticisms about it, that it retreads a lot of plot points, that Snoke looks totally fake, but here's the thing. I have never been this invested in the characters before. The characters in the prequels, of course, are most usually saying unbelievable things, but even in the originals you have to admit the delivery is often kinda goofy. I was really buying the acting in Force Awakens. Finn and Rey both established so strongly without saying a word. All their emotion and their pain felt real. And I think that's the really important part.
That and the fact that look at that, they weaponized stars! The title of the franchise FINALLY MAKES SENSE