We did a 4 week roadtrip in NZ (after 2 months in Oz) 2 years ago, stayed in caravan park motels but desperately want to return for 2 months to caravan, because we realized like you that it would give more flexibility and allow us to see a lot more spots. The plan was to come back this year but we've had to delay due to some minor health issues - hopefully next year. You can find the posts of that roadtrip on worldmap, may give you some ideas if you ever go back. Thanks for sharing - being younger you got to do some things (like bungee jumping) that we would not attempt! Safe travels. Following.