There’s no copyright involved in taking a picture of someone, or having a picture of someone… Your tourist pictures are fine. If you publicize then or try selling them, that might be an issue, but making it inconvenient for people to make money off of non-permission photos isn’t really concerning to most people.
For sure, anyone who has seen some of the videos of drink carts and luggage bouncing off the cabin ceilings during crazy turbulence shouldn’t have any questions about the utility of seatbelts in less than catastrophic events… Which of course is the goal even in ‘crash’ landings. There are crashes where seatbelts would obviously be worthless, but in anything short of that, you’ll be happy that you weren’t in a box with 300 human shaped dice being shaken up.