Keep in mind that the non flying public is generally clueless and borderline ignorant.
Low wing airplane - approach, embark and disembark to the rear and do NOT walk around the front of the plane.
High wing - approach, embark and disembark to the rear of the strut and do NOT walk around the front of the airplane.
Tell them to NEVER touch the propeller.
They may see you do it but there’s a simple answer, you know when it’s safe.
When pushing back just ask one person to help and not all of them.
Have the preflight completed before they show up and just give the safety brief.
Involve them in the flight, have them point out landmarks and other traffic.
Fly like you’ve got your grandmother in the back and your inheritance is at stake.
Its all about their enjoyment.
If you invite people then don’t expect them to pay.
If they ask you for a joyride then it’s more then fair to ask for sharing the cost.