"Also, if you witness such events, or see something that looks out of place should you inform the cabin crew? I'm never too sure if I should point out things like that as I don't like to look like I think I know better than the crew
"
Reminds me of the "Twilight Zone" episode where William Shatner saw a gremlin tearing up the wing in flight. Nobody believed him until they landed and looked at the wing.
Great show, did they ever have that one in Europe?
Seriously though, if you see something you are concerned about let us know. I'd rather explain something to you than be surprised by something you already knew about and I didn't. Just don't ask me the name of the river down below. They are all the Mud River if you really need to know!