But really...Cabo is mostly about partying. Go head over to Cabo Wabo and have some drinks and have a nice time. If you want some Mexican food, go to the Office and had some decent food.
In the past, I went on a zip lining tour through Vallarta Adventures (through the ship). You take a boat, then a truck, then ride mules...up to the top. Then you zip line down various areas above trees, rappel down a cliff, etc. We even went tequila tasting afterwards! Lots of fun.
In the past, I also went to Caletas Beach...a really nice and secluded beach. Definitely fun for the family.