I went for a tattoo and as I was sitting in reception doing the consent forms a woman came in for hers with two children - a toddler in a buggy and a girl of around 5.
She sat them in the seating area and pulled out a big bag with sweets and drinks, iPads and toys.
The receptionist came sprinting over from another room and asked what she was doing and said the woman couldn’t leave her children there for over an hour whilst she’s getting a tattoo.
The Woman said to the receptionist that surely she could keep an eye on them and it wasn’t like she was really busy and they had things to occupy them.
The receptionist said “even if I wanted to look after them - and I really really don’t, it wouldn’t be allowed and we have a rule about children not being allowed on the premises which you have been told already”
The woman then suggests they can sit in the room with her when she has her tattoo and look at the iPad and insists they won’t make a sound and will behave.
The receptionist gets frustrated and tells her to leave but the woman had paid a deposit so starts getting angry about losing it.
I thought they might back down and give her the deposit just to get rid of her but one of the tattooists who was a big beefy man came out and asked if she needed a hand getting the pram down the stairs and picked up her bag and handed it to her.
She left but if it had just been the receptionist I bet it would have been hard to get rid of her.
She clearly knew her kids weren’t allowed so I imagine she had previously asked and had been told no.
Based just on that experience I can see how that sign in the OP came to be displayed and you can imagine the frustration that led to having a second one when the first was obviously clearly ignored.