The only thing I was asked for was a passenger safety brief...
- Airside safety - high vis, no running, no smoking etc
- How to get in and out of the aircraft
- Location of any exits
- How to fasten/tighten and unfasten the harness
- Safety features onboard - fire extinguishers/first aid etc
- No smoking
- Hands and feet away from controls at all times
- Don't push the transmit button
- Don't talk to me when I'm on the radio
I think that's about it, of course all of this was worded in a very friendly manor as I would to any passenger.
Hope this helps!