Jeff:
I wish I was being tongue in cheek about green speeds, but I wasn't.
You can get away with slower green speeds if that's the standard in a given location. It works fine in the UK, because the "better" clubs are not running their greens at 12. It works fine in Bandon, because you go there for 3-4 days and play a bunch of greens that are 9.5 or 10, and you probably didn't play on 12 the day before, and you adjust.
Slower speeds failed miserably at Spanish Bay when they tried fescue greens. People would come over from Pebble Beach and leave their putts short all day and be pissed off and loudly ask why the greens couldn't be the same as Pebble. We had the same problem at High Pointe the first time around, with Grand Traverse Resort just down the road, pumping up their green speeds to make their resort course "challenging".
Te Arai is a little more like Bandon; New Zealanders aren't used to super fast greens to begin with. But if they are going to keep the speeds up at Tara Iti, they're going to have to keep them pretty much the same down the beach, or the Tara Iti members will never get a putt to the hole.
This, incidentally, is why I speak out against everyday fast greens at every opportunity, even for courses I don't belong to and have no interest in playing. The more that rich clubs normalize the standard of fast greens, the more other clubs will be dragged down to that level, even if it makes no sense for them, agronomically or economically or playability-wise. Just as with everything else in life these days, we are all at the mercy of the loudest guy in the room.