Nope. They have no idea, so don’t spoil the movie for them.
Not only did whatever happened on the Titanic happen over a hundred years ago now, the last big movie about it–you know, that one—was being finished up twenty years ago.
Damn, you’re old.
Don’t even bother googling if you don’t know what I’m talking about. All that comes up is people posing on row boats and fences and such.
Just watch one of the better documentaries like Titanic: Death of a Dream. Wait, that’s another spoiler.
So, yeah, the dream died and everyone learned to never have hubris in the face of Poseidon ever again. Or something.