Which gives you the most bang for your buck? As the designated travel agent for our family **sighs** I am responsible for budgeting our vacas. We will be staying in Oahu for 9 days...really 7 if you factor in two travel days. Should I go with the go card (3, 5 or 7 day), the explorer pass, or the entertainment book? We don't need restaurant discounts we have plenty of gift cards from our credit/debit card points. The purpose is to mainly cut down on excursion and entertainment costs while on the island.