@Kitty-and-Creek0
Yes, I am often rewashing pots and pans (and putting glasses etc that the guests have attempted to wash in the dishwasher). Sometimes though, guests will reuse a greasy/dirty pan before I've spotted it and then the damage is done!
RE scratchy implements, well, you'd think it would be common sense, but I had one girl trash a brand new ceramic pan by using the pointy end of the chopsticks to stir. I think it's quite common in some countries to use them as cooking implements, so it's something I have to keep an eye on!
Also, if guests are used to an electric hob, that can be an issue. One couple were destroying my pans and I had to ask several times for them to be more careful. I couldn't understand what they were doing. One day I noticed that they had the gas on really high and were not watching or stirring the food, so they were basically burning the food at the bottom of the pan every time, and then couldn't wash it off properly, so would reuse it like that.
They weren't experienced cooks. They told me they lived off ready made gnocchi back home, but I had recommended Hello Fresh to them, so suddenly they were cooking up a storm, but had no idea what they were doing!