I have a 50% discount Promo Code to use on Interislander, which I am selling as I do not intend to use it myself. Terms & Conditions of Promo Code: 50% off full booking value. Valid single use only and not in conjunction with any other offer. Booking must be made via Interislander website. Normal fare rules apply. No residual, refund or cash value. Valid for travel anytime until 31 December 2012. I will send the winner of the auction the Promo Code who must then make their own booking online at the Interislander website. You can book either one-way or return on ANY sailing and ANY FARE (including Web Saver), the discount is 50% off the TOTAL online booking cost, including any 'Extras' such as bikes, kayaks, cabins or the Premium lounges. This voucher can save you hundreds, especially if booking a minivan full of people on a return crossing.