For families visiting Austin, one of the best resources is a free publication called Austin Family. You can find it at local restaurants and grocery stores. It comes out once a month, and though much of it is not directed at visitors, there is a good monthly calendar of events. You can also see the online version at www.austinfamily.com.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.