Originally Posted by bibbju

You can use the Cathay lounges in Hong Kong (even though it's a NZ operated flight) since you're travelling on a J ticket.

The confusion about the Thai lounge may have arisen as different lounges are used for CX/NZ codeshare flights for status members of AirNZ's FFP. Whilst Gold/Gold Elite members (and I assume also *G) can use CX's lounges regardless of class when flying HKG-AKL on a CX/NZ codeshare, Koru Club members are only entitled to use the Thai lounge in HK.

The Thai lounge isn't actually that bad, although most AirNZ Gold/Gold Elite (or *G) holders tend to prefer the United lounge next door, especially if it's breakfast time.