I really want to love the Go Oahu card because it's practical and it saves you money. However, I feel like the tour companies do not really give you that much importance when you are holding a Go card.
Roberts Hawaii left me and my family behind at 8:05am even though their paperwork says 8:20am.
The Go Oahu Card is worth every penny. We spent a week in Oahu crammed full of things to do with our card and it saved us a considerable amount of money over purchasing direct from the attractions. We were only able to do about half the things the card would let us do because we didn't have time to do it all! If you figured what we paid for the card compared to the regular charges for what we did, we saved a few hundred dollars.
We did many activities we might not have done without the card