Also saw it with a couple that is very late to the MCU party and we're trying to catch them up, and they've also seen some of them really out of order. We're up to Age of Ultron and they've seen some of the ones like the Guardians movies and Doctor Strange and Ant-Mane but they wanted to see this one because they liked the first one even though I told them it references movies they haven't seen yet.
So when they were referencing the events of Civil War, they leaned over and said "What did he do with Captain America" and I just said "Civil War" back. And then after the mid-credits scene they said "WTF just happened?" and I said "Infinity War".