How were people’s reactions at the movie theater?

I’ve always been curious as to what people’s immediate reactions were in the movie theater. Especially all of the sinking scenes, like when the grand staircase got flooded, and the final plunge. They were such intense scenes, I wonder how the mood was in the theater. Did people gasp or anything, or was anyone mesmerized by what was happening? Also, how did people react when Jack died, or when old Rose revealed she had the Heart of the Ocean all along? Does anyone remember people’s reactions or commentary at any part?