Realistically the only aspect of travel to New Zealand which is not family-friendly is the long flight, but even this can be broken up with interesting stopovers. Once you have arrived, you will find New Zealand an ideal destination for a family vacation.
With a huge variety of experiences available year-round, there is always something to keep younger travelers entertained, whether this be wildlife spotting, 4WD trips, walking, kayaking, Maori cultural shows, aquariums and interactive museums or boat trips. There is also a wonderful variety of family-friendly accommodations with excellent facilities available.
Clean and safe, New Zealand is also a stress-free destination. Apart from a few pesky sandflies there are no creatures to worry about and no malaria. Endless stretches of pristine beach and countryside allow you to spend as much time outdoors as you like enjoying the sea or mountain air.
The food is excellent and restaurants cater very well to children, and the general Kiwi way of life means kids are welcome to join in with almost any activity.