Nobody sits on my cases..Ever
We purposely buy cases that will protect the contents and survive if they are stacked on, stood on, or otherwise not treated like Grandma's antiques. They cost more, weigh more and take up more space in the truck or back stage... but we know that folks (including me) will pull up a case rather than go sit in the rodeo dirt.
Now for those folks that I find sitting more than appearing to work, I have taken to calling them "Horton." As in "Horton Hatches the Egg". Perhaps they are "Friends of Mayzie." Nope, not buying it, that case ain't hatching, so get off of it and back to work.
Now to get those damn kids off my lawn...