Generally, people have been respectful to my games over the years.
Most of the time I catch someone setting sodas on top of the games, I sqash that idea real quick.
I did have a collector friend who would play Paperbay by slamming the handlebars forward and backward with all his body weight. he repairs and collects games, so I'm not sure why he was being so rough. I just told him to take it easy.
A few weeks ago with an adult birthday party someone's young kid kept raiding the candy machine and leaving chewed suckers on the steps and candy all over the place. i finally turned off the candy machine and told him it was staying off for the day. A few hours later, it was on and guess who was getting candy. I turned it off again and told him everyone was done for the day. An hour later it was on again, with this kid on it. I finally tilted out the machine, pulled the plug and pushed it back in so he couldn't get to it. I then had a good talking to with his mother. When I was cleaning up at the end of the day I found a fresh piece of chewed gum with little kid teeth marks in it stuck to the sides of one of my games. I'm taking a wild guess on which little turkey did that, but he already went home. Some peoples parenting skills are less than desired, if this kid was being watched in any way that day none of the above would have occurred.