According to the two women volunteers at the stall at the market on Saturday (in the photo), there are two main requirements: a reasonable level of fitness (but you won’t need to climb up multi-story staircases in Waikanae carrying 50 kg of clothing and gear) — and that you show up when called. Sometimes the need is medical rather than extinguishing a fire.
They said that the advent of the ‘Ewy’ has reduced their work as there isn’t the need that used to exist to attend car crashes on State Highway One. But there are still the inevitable call-outs for summer scrub / bbq fires and house fires in winter.
You can read about it on the volunteering part of the Fire and Emergency NZ website here