No meals on domestic flights, only tea or coffee and bag of crisps or a cookie.
on your PER-CHC looks like your award ticket is for a seat and bag only. they operate Seats to Suit on trans tasman flights where you can purchase a seat only (and 7kg cabin bag) seat+bag (no movies but tv series), the works (seat+bag+meal+movies)
https://www.airnewzealand.co.nz/the-tasman-experience