JeffW
TUG Member
... I will ask the manager what it's for...
I would submit that if the manager tells you that the tip doesn't all go to the servers, you tell him this will be your last visit to their establishment. I think almost everyone would think that "tips go to your wait staff", and it's just not worth the effort to have to mentally keep track of, "Well, this place, the tip is pooled and divided", "this place, the restaurant takes a 1/4 cut of the tip amount", "this place, I can charge the meal, but need to pay the tip in cash", etc.
It might actually take some pushback from customers, having the manager realize that while he's collecting a cut of tips, he's also losing customers, that might make them change their policy.