I watched Openheimer in a IMAX movie theater today, it was not bad I liked it, especially the cinemography.
But somehow - probably because I didn’t do enough research before going - I was expecting a lot of nerdy physics science like in the Martian, but it was mostly politics.
There was an intermission? I didn’t get an intermission! I just held my bladder the entire 3 hours.
When showing in 70mm there’s an intermission to change film reel. It’s old school when it isn’t digital.