What do I need to get back into the terminal?

Sign on the walkway to the waiting rooms, Horseshoe Bay Ferry Terminal, West Vancouver, BC

Sign in the parking area, Horseshoe Bay Ferry Terminal, West Vancouver, BC

What do I need for re-entry, the "Receipt" or the "Ticket receipt"? Or are they the same thing? And if they are the same thing, why does BC Ferries call the required piece of paper by two different names?

Just one more thing to drive the customers crazy.