The beaches available to the campgrounds are uncrowded. (Cold) showers are available. Beautiful areas, with proximity to so many different types of activities.
Cons: Weather can be a factor. The wind never stops even in the summer. Check the forecast and be aware that it might change suddenly.
Fun for kids, interesting for adults. Hold a tarantula, touch a sea urchin. Relatively cheap for the range of exhibits there.
Full disclosure: I used to work there.
Cons: Hold a tarantula, touch a sea urchin.
Can be crowded on holidays or during school times.