practical advice for travelling to new zealand

In late 2015, while still living in New Zealand, I had the opportunity to guide a small trip through New Zealand. It sounds enterprising, but it was my brother and his friend, both travelling to New Zealand for a friend’s wedding. My brother hasn’t been there since he was 7 (or 6, he skipped his seventh birthday by crossing the international date line), and Sully had never left the US/Mexico.