I went through and was pleasantly impressed with the temporary offering.
From flyertalk it seemed like only P1 and ticketed F would be provided a la carte dining. However, as a regular WP I was walked to the dining area by the lounge dragon at the entrance.
Turns out there's a smaller menu available for WP vs P1 or F, though WP still gets the full coughtail menu. The WP menu was still fairly substantial and included fish, minute steak, squid, laksa, burger - better then the AKL dining offering. Will post a picture later.
They also set aside a couple of showers for people in the F area so there was no waiting.
Overall the F area was quieter as well, though maybe there weren't many status/F pax flying through. The main area was quite busy though.