New Zealand does not have a culture of going out to eat: meeting for dinner at a restaurant is typically something that is done only on special occasions such as birthdays, or on romantic
Fast food/convenience food is fairly easy to come by. Petrol stations often sell pies that can be heated in-store. Fast food is available everywhere, most of the larger chains are represented. There are a number of local burger chains as well, Burger Wisconsin and Burger Fuel are both worth trying.