Give the gift of fun! Adventure in Hawaii Duck Tour gift certificates make a great Holiday gift for your friends and loved ones who are local or planning to visit in Hawaii! if the tour that the recipient wants exceeds the amount of the certificate, we will charge the recipients for the additional cost of the tour. Due to limited availability for tours, we do suggest that you present the certificate far enough in advance so that the recipients can reserve the tour prior to their arrival in Hawaii … all tours are subject to availability. When you order a gift certificate, your credit card is charged at the time of order and we send you and recipients an email that you can print out and give to the recipients as Gift. This will include necessary instructions to redeem the gift certificate … when the recipients are ready to use their certificate they can either call or email us. IT IS NOT NECESSARY for the recipients to come to our office to redeem the certificate. It can all be done over the phone.