I bought 5 passes for my family and found them easy to use. Still here in Oahu and have 1 day left to use tomorrow going to do Diamond head crater hike and hanauma bay snorkeling. I have found everyone I have dealt with in using this card t..o be very professional and courteous. I booked some tours before I left home to make sure I didn't have any problems working things into my schedule. Plan ahead especially during busy times like Christmas week to avoid possible disappointment, tours fill up. On the down side, you can't use the card for most things after 3:30pm and having to swipe for tickets to the Luau the morning of that day could be a hassle if you have other plans. I got around that by doing the Pearl Harbor/Honolulu city tour that morning and swiped for both at the same time. PLAN AHEAD. I would DEFINETLY recommend the card for this location.Read full review