Went for the "On your own" tour. Adequate. Startling at how city still affected by earthquake. Makes you appreciate a more stable home town. Bus trip from Akaroa to Christchurch worth the ride.
Actually was "Zealandia". Again, expensive, especially as we only had an hour there, when a least 2 hrs needed to see it all. Cable car, more a ratchet car.. no cables in view!..was disappointing. Very short ride and view only from top.