Nothing bothers me more than when I valet at an establishment only to see that there lock box for keys is and box made of two by fours and plywood doors. Their locks are just a hook that even a two year old can get open.
I can't understand why establishment owners would be ok with this. Keys are worth more than the $12.00 it costs to make them. They start a moving, dangerous, costly machine.
So, if you are having valet at your home or business, make sure keys are secured in a steel lock box.