When you read that document I've linked to in the second post, what the dealer said DOES actually make sense.
If you look at the Convenience Pack (page 8 ) it has a tick in the GTI as standard equipment - and then a little 3 next to it.
In the Lux Pack it also has the little 3 next to it.
The little 3 at the bottom says you can't spec them together.
If the GTI already has the Convenience Pack as standard, that would indicate that you can't order the Lux Pack with it. You can either have one or the other. If I had to choose, I would take the Convenience Pack - but ideally I'd have both!
If you guys are saying that you have both - then great - but I can see what the dealer is saying.