How do you stop house guest from damaging your speakers?

My speakers are about the only thing exposed most everything else enclosed (sans pre on top and TT).  GFs tribe here for xmas and was nervous ++.   I moved them back closer to the wall and I think my GF warned her outfit of my sensitivity.  Everyone stayed clear of the rig as well as the large rambunctious critters. One of the reasons I no longer have pets as I got tired of critter control in general. 

Couple years ago one of my friends came over and he leaned on one of my speakers and I quickly diverted him by moving to another room.   If somebody starts scrutinizing my speakers I move in close to head off problems. 

Guy down the street had 4 B&W 603s.  Between the grandkid's neurotic full size poodle and an over zealous cleaning lady the speaker looked tattered after a few years. Broken grills, dented tweeters.   I even notice one looked like it was sitting at an angle so I looked at the feet.  One of the front feet was almost pulled completely out of the base.  Best I could figure was cleaning lady was leaning the speaker over and jamming the sweeper underneath as I knew for a fact his wife insisted she sweep under anything that could be moved.    

@gjohns

There are two types of people in the world. Us and Them 😌

Agreed, though sadly compared to them we're the tiny minority.

My Tannoy Berkeley’s have solid wooden grilles with just a cutout for the 15 inch drive units.

Behind their beige fabric no one has yet realised that the grilles can be removed.

Nothing good could happen if they did.

As for this worrying tend to see some loudspeakers being sold without grilles, no, no, no!

“Come out” as an audiophile! That cracked me up.

Just print out a little sign. 
Welcome! Happy to have you in our home, and pleased to share the exceptional sound of our audio system with you. We have a Zero Tolerance Policy on touching any part of the system, including and especially the speakers. Please refrain from coming in physical contact as you listen. If you should forget, the following response scale will apply: 

First Offense- I break your left knee cap.

Second Offense- I break your right knee cap.

Third Offense- You will never be invited back again.

We thank you for your cooperation.

I have had many audiophile friends over for a listening session and never had a problem.  When I have my non audiophile friends over, the first thing I tell them is not to touch anything because the equipment is very delicate.   If they do, they will be out the door.  So far, so good.  

This is one of the best threads in a long while.