Glad to hear this and a ^5 to you.I have shown up to shoots and have questioned the girl's legal age. I have photographed the licence before the shoot to ensure I cover my ass. I have been in situations where agency owner and girl were not happy that I would refuse a shoot if proper ID was not produced and recorded, but they have always understood and accepted it. It has happened only a handful of times.
I did walk in once to a shoot and knew right away she was not of age and didn't want to be there. It was for "porno and cam" work I was told. Asked the owner to leave while I do the shoot as it makes the lady more comfortable instead of even trying for the ID route. 5 mins later we were both out the door and she was phone with mom and dad making arrangements to get back home to Calgary, I was on the phone with police sending them back to the hotel.
We each have a responsibility. Sadly some of us just take it more serious then others.
Sometimes it means getting the under aged in a separate room and questioning them. Maybe even changing course of action and possibly telling the person at the front desk that they changed their mind and want a dinner date with the person instead and paying to take them outside to question them. I wonder how many would be willing to do that? I do believe that there is ones that would do that, but sadly feel that the majority would rather walk away.