If you haven't been before around the East Cape from Opotiki to Gisborne is just fantastic. Especially Opotiki side, gorgeous bay after bay and some lovely campgrounds on the way, the other side is mainly farming and not that interesting
But we recommend Anuara Bay as a stop off point, just picture book perfect. They have a small campsite but no shop, nearest one is 15ks away in Tolaga Bay ! So stock up before
Then when you get down to just outside Gisborne there's some more beautiful bays and Gisborne itself is just lovely.
If you head for Rotorua again head for Lake Tarewera and The Landing Cafe, wonderful food and beautiful looking out over the Lake to the volcano.
In the Wairarapa, Waohine Gorge is just a great walk for the swing bridge
but they are replacing it with a safer one
Great campsite though and very peaceful, also can kayak down the river if it's at safe levels.