In a one door airplane, like a Piper or Mooney, it goes like this.
Preflight
1. Don't touch anything.
2. If in the event we have to do an off airport landing, and we won't, you will see there is only one door, if you don't get out fast I will be required to climb over you.
Prelanding
1. I did all the hard stuff, you land. (works best if the pax has never been in a small acft before)