Visitors from visa-waiver countries need an eTA (Electronic Travel Authority) and must pay the International Visitor Conservation and Tourism Levy (IV... Read MoreL). Private island rentals, particularly in the Bay of Islands or Marlborough Sounds, are often seasonal. Short-term rentals are subject to a 15% GST. Logistics typically involve private boat charters or helicopters from Auckland or Queenstown. Guests should be aware of strict biosecurity rules—ensure all outdoor gear is spotless to protect the island's unique ecosystem. Read Less