Don't offer a customer with a condition out of their hands

Take Away (Out) Pizza delivery menu. I don't normally eat take away pizza but I was looking at their menu which had been hand delivered. I spotted an unfortunate mistake that could cost them dearly. They state an offer and provide the following condition: if ordered and delivered before 4pm. Now someone who looks at this offer at say 3:30pm will think twice about taking advantage of this offer. Since delivery is out of the customers' control, it is not wise.