I watched it as well last evening - it's long, nearly three hours. I didn't know a lot about Marilyn Monroe, so I wasn't entirely sure what was fact and what was fiction. I also found some of what I will term the "artsy-fartsy" visual effects annoying, in particular, the threesome scene in which it seemed like viewer was sent on acid trip and totally obscured what should have been beautiful bodies in various forms of coupling. I too had a hard time understanding the NC-17 rating since the potential scenes that might merit it were more like flashes where if you blinked, you'd miss it. I also thought the floating fetus pregnancy/abortion scenes were overdone. That said, I appreciated Ana de Armas' commitment to her performance and didn't regret watching the movie.