Excellent, well worth the money. Makani sail was brilliant and tour to Manoa falls was good - where lost was filmed and hired flippers at Waikiki beach all in one day.
Purchasing the go Oahu card made our holiday easier - the touristy things were essentially chosen for us.
Travelling to and from different destinations was the only issue.
We hired a car on our 4th day which made getting around so much more convenient than catching public transport and a lot less expensive than hiring taxis.
I hope to see these cards available in other countries.
Great value for the card. Way too much to do in one day, and totally worth the price.