What is the luggage allowance on domestic flights?

Our preferred airline is Air New Zealand and the airfares we will book for you all have a luggage allowance of 1x23kg.  However, if you are travelling with children you may also take a pram and a car seat.

If you are wanting to travel with sporting equipment this counts as part of your checked-in baggage and the usual weight allowance applies.
If you need more allowance, for a moderate additional fee you can buy a Prepaid Extra Bag before you fly.