When visiting Christchurch take a guided tour on a red bus they have before and after videos going on VHS to show you what it was like in the city before the earthquakes and after.
Fantastic is always the Skylines Skyrides and luge - awesome views, the Rainbow springs with the new water slide (and awesome "bush walk" - can't get lost there!) and a trip on the Lakeland Queen steam boat with lunch.
loved staying on the North Shore it was Awesome everything is so close, super clean city would love to go back, public transport is great no need for a car!!