A few weeks ago, we got a message from Sainsbury's, on the morning of our delivery, saying that due to some problems, no fresh produce was being delivered. Dh immediately went online and booked a delivery for the next day, so we could replace anything that was missing, and filled it with dog food, to get over the amount for delivery.
The delivery arrived and was almost complete - one item missing, I think, so we went merrily on about our day, and didn't even consider cancelling the extra delivery. The dogs were very impressed with a supermarket delivery that was just food for them!