I have a good group of friends who come over on sundays to play. I trust them down there alone often. During the week the friends stop by every now and then and I let them alone while I feed the wife (she is like a puppy). Last night a couple were over and I saw them doing lots of extra flips when they drained. First the one did it, then the other contaiged it apparently. It sorta irked me. I will see if they do it this sunday and politely mention that it puts unneeded wear on the machine.
A web friend came over once with what I thought was his kids, but it turns out he brought over two he was baby sitting and his two and the kids just flipped constantly for no reason. I took a stand and asked my web friend to help me explain that you only flip when you need too. It sorta worked, but a fuse fried and I shut down the one machine and then kept reminding the kids. The guy got the hint and took off. I felt so used.
My main pin friend is welcome at any time and I am almost ready to give him a key. Even though I sold him a pin, he will still ask me if it is OK for him to remove the glass to get a stuck ball or fix some little thing. Friends that respect your machines are the absolute best.
Another good friend has been over a few times. He used to work on a route working on machines all the time. He is very abusive of my machines and hits them when he drains. I find that so bewildering on the level of him having being a route maintenance folk, and a friend.
My nephew is a bit rough on the machines, but has so much fun and just loves it over at my place that I really do not mind.
I think it comes down to the person when it comes to my annoyances. These machines are meant to deal with abuse, but they are our babies.