As others have mentioned the cabin crew are pretty good at answering any queries or questions about any issues, just some don't want to listen.
Works both ways though. Some years ago I was flying to the states from Gatwick and know that after 3 hours or so you should be well out over the oggin. I happened to glance out of the window and we were over what was unmistakably Ireland. I asked one of the cabin crew (quietly) if there was a problem and they assured me that all was well with the flight. I knew they were telling porkies but decided to leave it at that, we were obviously not about to plummet from the heavens. An hour later we were landing at Manchester as the a/c had gone tech.