I guess the exact codes don't matter too much. It's rather trivial for me to generate them from the numbers. I also just took a stab at the QR code, it returns your name and a web address I made up. You'd have to provide the correct contact information you'd like to have in it.
Exactly, a place holder is fine this stage of the game. #11, is this the Franschhoek valley? #6, too plain. #9&10 - clever - I like having the year in there. Unless the QR code is somehow, liked in with the overall design, I'd just leave it alone for now. I'm glad you brought it up though.
The QR could go right in the design like on this one. It'll scan fine when printed on a label. I just offered it separate to introduce the concept to you and give you the chance to scan it yourself. I doubt this one will scan simply because of the preview resolution here on LT.
I agree 6 is too simple... although I like the one with the name in it. #9 and it's variants are really cool. The neat thing about having the year in there is it makes it human identifiable at a glance.