Advance Purchase Offer: Get 10% Discount on best flexible rate Millennium & Copthorne Hotels, New Zealand. Millennium, Copthorne and Kingsgate Hotels offer even better value when you book ahead. Whether you are travelling for leisure or business, plan your trip in advance and enjoy the rewards. Book 30 days or more in advance of your stay, and get 10% discount off our Best Flexible Rate! It pays to plan ahead. When you are looking for super hotel specials, New Zealand has the solution in Millennium, Copthorne and Kingsgate Hotels. T&C: Offer valid for booking and stay until 31st December, 2016. Valid for New Zealand Hotels only. Book Now. Use promo code: NZADVPUR.