Got to know kids first. I've adopted 4 and fostered upwards of a dozen.
1. First, there is time when the kids get to play and then there's adult time with the pins when the kids are not even allowed in the gameroom. This goes back to the same rules for the poker room or the billiard room. Kids will see and hear things they shouldn't.
2. I have to police the drinks/food in the gameroom with the adults as well as the kids
3. We adults play more than one game simultaneously. Not a big deal there.
4. F-14 Tomcat is sitting there with the launch sound going and a ball in the shooter lane while player has left to "empty" a drink and make another. That gets me a little annoyed. I let it go for a little while before I press on the group to continue play.
5. I don't police my guests jewelry, I'd probably be called some bad names.
6. As annoying as it might be, if my games can't take beating on the flippers from the kids - it probably won't handle adults either. It's part of quality control. You obviously were never in an arcade back in the 80s.
7. I respect your right to run a museum. If that's what you want then put up velvet ropes, unplug the machines and charge admission.