I didn't grow up with parents who disciplined properly and that is why I had such a hard time in my pre teen to young adult life (and probably still if it weren't for the grace of God!). Yeesh, bad memories of their attempts! Even worse memories of my response or consequential life! Ack!
Heck! Change that sign to "WE RESERVE THE RIGHT TO SPANK OUR PATRONS!"
Yes, there are consquences. Sorry you had to suffer for your parents decisions or lack of