I saw RO in glorious 70mm IMAX last weekend, (twice!) and was definitely worth the plague I caught on my trip. (Still the best sound presentation hands down.) I thought film grain helped the Tarkin scenes a lot. The movie as a whole is growing on me.
There was also a six minute preview of Dunkirk, and the aerial combat scenes were stunning.
Was also tempted to get popcorn just for the sweet Death Star shaped bucket. Did any non IMAX theaters get those?
And still not enough Moroff.