Had some work colleagues take a trip to BNE recently ex. CHC. Had to go via WLG on the way there and through AKL on the way back. Their flight 7 pm AKL-CHC was cancelled and no seats available later in the day, so they stayed in a hotel that night. Got rebooked for AKL-ZQN-CHC the next day, then AKL-ZQN leg got cancelled. Finally, eventually, they managed to get routed AKL-NPE-CHC. I imagine that was quite a long trip for what would normally be just a shade over 3 hours. There's just very few seats, staff and planes to go around.