Where should host an open house in your city?

Please let us know where you think we should stop on our tour and have an open house. We're not familiar with many of the towns we're visiting, and we're looking for feedback on where to host the open house when we are in your neck of the woods. Examples:

At the Walmart in Santa Cruz

At the xyz park in Santa Barbara

Please let us know if you can grant permission to be there (you work there or own the property). Ideally any suggested location will have ample parking.