As a fanboy, just having watched it 2 days ago...
  1. Rogue One: A Star Wars Story...Rebellions are built on hope!
  2. Set in the universe, between Episodes 3 and 4, don't think of it as a Star Wars movie - it's a stand alone!
  3. Look out for the nods and Easter eggs from the rest of the saga...Cantina scene characters show up, too!
  4. Enjoy the deliberate, dark and edgy storytelling and direction. Gareth Edwards did Godzilla - expect that tone.
  5. It's all out war! Take in the action sequences - both in space and on land. Producers previously worked on Saving Private Ryan, Harry Potter, Hunger Games, Lord of the Rings.