Hey all - thanks heaps for your replies! I'm very excited to check out the lounges as I've always been a fan of Air NZ and now have even more of a reason to fly them when I can.

For the flights to RAR, I was planning on using NZ anyway to get the 777 between AKL and MEL (favourite aircraft and great onboard product), and because I prefer the International A320 config over the DJ 738 config.

I have always been one to arrive at the airport at or before the time checkin opens, so if there are Space+ seats left on the day then I'll be lucky. Can't really afford to go Works Deluxe with house, wedding and honeymoon all happening at virtually the same time. And one of the reasons I wanted Koru was because of the late flight time out of RAR and early out of AKL, gives a nice quiet personal space to relax in, so I plan to make the most of it.

Thanks heaps to everyone for your quick responses!