Yeah, contend at your peril :-0
Coromandel- wow. I tried to add a short tour onto a longer one in 2008 but APT charged a single more than two peole travelling together! I protested but just got rude answers; when I finally got an apology and an acknowledgement it was a printing error, it was too late. Then I went with a friend in 2011, he drove and I went to sleep going up the North coast of the peninsula. I couldn't believe it. Stayed at HaHei beach (sp?) , just missed the quirky train, would love to walk the walkway (that companion didn't do walks).
Don't care much for NZ towns and cities, even Napier though Art Deco is one of my interests. But the rest, wonderful.
Stewart Island is as near paradise as any of us are likely to get