Originally Posted by
secretsea18
Good luck.
I was unlucky in that situation on ANZ in the past. But I did get 3 adjacent seats all empty ^ ^ , and peacefully slept the entire flight to Auckland

Tried this on Air NZ on the way to Papeete for our honeymoon. No luck but they put us in economy bulkhead and supplied us with biz class champagne. If you want biz or first, you need to pay nowadays or use FF miles.