I don't want to point to drugs, steroids, fast food, stupid parenting, TV or drugs, but there seems to be more and more people whose brains "don't work right."
I have an employee who might do just what your guests did--she can only think of one thing at a time, but can get sidetracked onto a one-lane side yard.... Sometimes I liken her to a squirrel in traffic. She's a great cleaner but you have to be VERY SPECIFIC with your instructions.
On Tuesday she took the rugs out of bathrooms to shake them so on Friday I said, clean the rooms and take the rugs out to shake them. Next thing you know she had the BIG RUGS out of the guest rooms, too!!! Well, now, the floors under the beds are very clean. It took an extra 1/2 hour per room on Friday. Geez.
I'm a person with lots of nuances in my language and my thinking. Adapting to this employee is quit a challenge. Even writing it down can be a challenge, both for us and for her. Eventually we'll get it all straight but in the meanwhile, I dislike management even more than ever..