Here is my experience with the pass. I booked months ahead of time for the attractions. I bought the 4-day pass but only used 3 days. I did all the Pearl Harbor attractions: Day 1 Submarine/Mighty Mo/Aviation Museum,
Day 2 Circle Island Tour with Byodo In Temple turtle spotting and Makani Catamaran, Day 3 Kuolua Ranch Movie Sites tour/ Sea Life Park
Day 4 was never used however booked the Diamond Head tour and had to cancel last minute so was charged for not canceling within 48 hours anyway.
My suggestion is to know your family. I grossly underestimated the 5 hour time change we had and none of my family could wake up which then made us race to get to every single activity because no one was ready. My second suggestion is to only do 1 major activity per day. We did the circle island tour which was wonderful but we raced to make the Catamaran tour on the same day with only minutes to spare. Everyone was too tired to enjoy the boat ride. Also, know that you are roped into these activities if you don't want to be on the hook for paying for them again. Most require a credit card to reserve. I did cancel 3 activities I had planned for Day 4 with no issues but for the Diamond Head, I did not cancel in time. I know I would have liked to do all the activities planned but my family just couldn't handle it thus why I had to cancel. Also, all activities are during the day. Therefore, you have to know that you can't just wake up and go somewhere most of them start early in the morning. Also, I regret not booking the Luau. I was afraid to drive at night but I think it may be worth it to pay the 25 per person transportation. I ended up spending another 460 out of pocket to go to Paradise Cove Luau when I could have just booked through the Go Card. A lot of these Circle Island tours are 40% or cheaper through Groupon. I think if I were to go back I probably would not get the card because sometimes it is just easier to book things when you get there on your own schedule. Was the card a good value? Yes! absolutely but you have to be committed to doing these activities and for me, it just wasn't the right fit for my family. My recommendation is to try to stay 2 weeks in Oahu and get the 7-day pass so that you can spread out a bit more. We stayed 8 days and it felt really rushed as a 4-day pass.