Postscript : Friday morning I received a call from the FedEx driver out delivering the card. He couldn't find the house. Of course I was of no help and we didn't have a phone number to pass back to the driver for further directions.
Arrrrrggghhh!!

After exchanging emails with Des I called back the drivers number but got the messaging system & didn't hear back. At that point I didn't have anything to tell them anyway, except "please keep trying".
Anyway, happy ending, I called the printing office this morning, got a really nice guy who was able to sort out the whole thing and confirm that the card was actually delivered friday morning. The driver I had spoken to was right there and said they were out in their garage.
So... the deed is done.
