Why have I never heard of this taco buffet?Que look at it this way:
You own Que's Taco Shack home of the all you can eat taco buffet with listed hours of 8AM to 6 PM taco buffet till 5:30 PM
I arrive at you location at 458 or 501 PM and ask to use the buffet, You tell me your buffet is closed.
What would talking to the management do? You are the owner. You either closed the buffet or you saw that it was closed.