Waipu + Northern Beaches
Matakana Country Park
This spot is the dream for kids! You could kill 3-4 hours here easily. First things first - the cafe is actually pretty good. The freshly squeezed cold orange juice is delicious and the salmon bagels go. You can take cafe food down to the massive playground and let the kids run around. There is horse/pony riding on site and a ride on train (with the quirkiest drivers including a dog that helps drive). Its all in a beautiful setting too. They host concerts, weddings etc here too.