I'm glad I watched the film first, then the episode of SHIELD. Saturday at 12:40pm, not many people in the theater, maybe 12 total.
Some *** behind me turned on the flashlight on his camera or video camera on his phone about an hour in or so, and lit up half the seats around me. I flipped him off and he turned it back off.
Half the people (one group, together) left at the beginning of the first credits, missing the scene with Quicksilver and the Scarlet Witch, I assume? Not a big follower of the comics.. The *** with the camera left at the beginning of the second credits. I stuck around til the end. 2nd after credit scene was meh.