Regarding the Intermission/No Intermission part of this thread: I think leaving for “relief” during a movie is fine. Friends will be able to “catch you up or you can see it again, with the pause option, when it comes to streaming services.
I think some of us, when seeing a live theatre performance, may feel that we’re disrespecting the cast if we leave the performance at any time. I’ve always felt like that when seeing a show on Broadway.