While the theater audience was very engaged, they didn't seem to care as much for Captain Marvel. Maybe because she's a newer character. There was no audible pop for her big return during the main fight, except for when she no sold Thanos' headbutt.
The "girl power" Avengers moment was kinda cool but felt a bit forced. But I also understand that it wasn't meant for me. I can imagine it meant a lot to young girls.
Since RP ruined Natasha and Tony's deaths, it did take me out of the moment. I would've loved to experience it without any prior knowledge.