Pros: Nothing. I wasn't able to board the flight, so I wouldn't know.
Cons: The staff from Air NZ made me lose my flight, keeping me doing queue after queue to pay for a piece of luggage that (apparently) was not included in a $350 fare. They wanted me to pay between $160 and $200 for putting a backpack in the plane!! Pay for almost another flight entirely! While I was going through the queues, the check in time ran out and, by the time I got to talk to someone at the desk to pay for the bag, the woman told me the plane didn't accept any more passengers... while I was still trying to get someone from the airline to help me! ONE HOUR BEFORE DEPARTURE. The plane was supposed to departure at 8:15 and I was still there at 7:15 trying to send my backpack to the cargo area...the solution? Re-book the flight, make me pay $185 in penalties and fees, plus $160-$200 for luggage and the difference of price when booking another flight.