I went to see "Past Lives" (highly recommend) and of all the previews Barbie and Oppenheimer were the two I resolved to see. On separate days, though, I can't imagine doubling these two up. Do people do this to save money?
My local film society got a 35mm print of Oppenheimer, which I have tickets to see opening night. Barbie on the other hand I'm happy seeing on a digital screen closer to home.