Bus tours are fun - join a group of likeminded people on a tour around the area (most are national and you can join a preset route). You can usually jump on and off these buses with a days notice.
They will organise accommodation and tours for you at each stop.
Compare the different companies to end up with one on your kind of vibe!
Bay of Islands Travel | Maps, Timetables, Directions | Bayofislands.net
Bay of Islands, New Zealand information - book your trip or accommodation today, use interactive maps, read reviews and see photos - all about the bay.