No, you're right. Most people clean up before a visit,especially if they are nosy and have a camera poking in every room. I was always on polish duty when my in laws visited.
My mother in law would often poke in our airing cupboard for some reason! Well I knew the reason, she had standards about how towels and linens should be folded! If she had a camera we would have been shamed us to the WI (womens institute)for all eternity. Pinned to the board whilst they could tut and display their jam underneath in homage to errant daughters who couldn't fold towels or linens in an approved way...
Sorry for going off on a rant