Along with the 3 Major International airports, there are about 30 other domestic airport terminals covering New Zealand. Regular arrival and departure flights are scheduled by both large and small airline companies to get passengers to almost any part of the country.
Rail is not a major mode of public transportation in New Zealand, being used mostly for freight or Scenic purposes.
Coaches are a common mode of transportation for visitors and residents alike. Coaches travel regulary between many towns and cities and to many tourist destinations.
New Zealand recognises all International Driver Licences. It would however pay to familiarize yourself with the road rules here as we not only drive on the left but also have a different set of "Give Way" rules that must be followed at intersections. A very good Guide can be found at http://www.atoz-nz.com/.
Many people hire a car or even a campervan/motorhome from one of the many rental company outlets. You must be over the age of 21 to hire a rental and will find outlets in all major towns and cities as well as at airport terminals. This link to http://www.ginz.com/new_zealand/ will provide more detailed information.
More information about traveling around New Zealand can be found at the following links:
Dunedin is a fairly compact (and hilly) city with public transport being provided by a variety of bus and taxi services. Dunedin is also small enough to use walking or cycling as a relaxing way of getting around. You can hire a car from one of the many rental companies. You can also take a coach or shuttle to one of the many tourist attractions available in the area.
The conference venue is within easy walking distance of the accommodation provided with registrations.