We are travelling to NZ next wk. We arrive in Aukland on the 6th and were thinking of going upto the Bay of Islands thew next day. Is it possible to travel there, see the Bay of Islands and travel back to Aukland in the same day or would we need to stay a night up there? Only have 3 wks in NZ and wanrt to see as much as possible. Any advice would be awesome, thanks!