Upvote:1
This is a pretty broad question, as virtually any information could be important and/or interesting (see, for example, the wide variety of articles in in-flight magazines on all sorts of topics), but a few categories you could consider include:
Upvote:1
That depends a lot on the passenger.
Some comments on a couple of your suggestions:
The only flights I've been on where I didn't have a hotel booked at the destination were those going to Copenhagen (where I live), so I really don't need the airline to suggest hotels.
People going on a business trip or somewhere they have been multiple times before probably don't want suggestions to go see the standard tourist sights, so your suggestion of "places to visit" is also questionable.