Ahhh that sounds amazing! Almost worth a trip to London in itself. 2 of the 3 greatest cinematic experiences of my life were in 70MM theaters (and both of which were Christopher Nolan movies). They're rare theaters in this part of the country, so I really lucked out.

Bladerunner is still a movie I've got very favorable opinions of. But wow, the atmosphere of that sequel really did quite a bit for me that the first never managed. I think there was a tad more in the way of plot holes, but it's likely to remain the movie I prefer. It'd be great to see the original in theaters!