YHA's 20% discount - valid till 31/7/12
For winter period, YHA is promoting their hostel with 20% off for members. This promotion started at 15/5/12 and end at 31/7/12.
This is the period for booking regardless of the date of stay. You can book in advance if you have a confirmed itinerary, then this will help you to save a 20% accommodation cost.
For more information, you can visit the YHA's official webpage - http://www.yha.co.nz/membership/special-offers/double-discount-members-special/