One of the saddest things I recall reading, think it was on 
where some guy posted that he got annoyed that some party guest's kids were playing his games! Crikey! These things were made for a commercial setting, and if they can't handle a few party kids, then I don't know what they can handle. Made be sad that these wonderful toys were being denied by some collectors to be used they way they were intended.
I love the kids bashing away, but one kid gave me the shits last year. He would constantly push the flipper buttons, I tried to coach him a bit, but he didnt get it. He is my sister-in-laws son so I just walked away, at least I didnt have hear my poor pin being tortured.......funny it survived anyway.
That's not torture - just a poor playing style! They are built to take it, and if they don't it's called maintenance. I don't think you want to get too precious about them - maybe don't let them put drinks on the glass.
My eldest son is out in the shed now playing Mousin' Around! (yep, he still wants more even after yesterday) while I catch up on the forum.
