I work at a restaurant, and I encountered great examples of this today. I was wiping tables, and a woman saw me walk past one table and stopped me to tell me that there’s was debris in the chair to which she was afraid someone would sit in it. That’s sensible!
I had another guest tell other guests that my restaurant was trying to steal from the guests because because a side of chips (crisps for you europeans) cost money. $1.50. A WHOLE $1.50 for an endless supply while you ate in the store!