A bit OT for this thread, but if everyone will indulge me, I wonder if this is the best way to use the NOR1 thing? I always stumble over it myself because status will bring some sort of 'free' upgrade, so its not always easy to see the value in paying for a NOR1 before you actually check in.
In relation to the SYD Hilton, I'm inclined to think I'll do the same thing as IainF, see what sort of upgrade I get, and if its the same as last time, which was (I think) a standard room with exec lounge access then go for a NOR1 at check-in.