The Starbucks Bathroom Monitor

Every once in awhile I will work at the Starbucks in Pasadena. When I do, I pick the table that is all by itself in the corner that is close to the restroom. I find that when I sit there I am constantly asked questions or general commentary about the restroom like:

Is there someone in there?
How long has the person been in there?
It seems like whoever is in there has been in there forever (To this I respond that the door sometimes self locks and they should go get a barista to unlock)
Do I have to go get a key for the restroom (No, there is no key required)

Today after many comments I decided to place a tent card note at my desk stating "Starbucks Bathroom Monitor" after a few minutes I was approached and asked if it was cold inside. I find this an odd question since the person asking was already inside (As opposed to someone inside asking if it was cold outside). In response to this question I added "Temperature Control" to the sign, I also should have added noise monitor since I insisted my favorite Barista turn off the music.