This Family Membership to the Regional Parks Foundation is good for two named individuals and their children (age 17 and under) living in the same household. Benefits include: Unlimited Day-Use Parking, Annual dog pass (good for up to 3 dogs), Horse/boat trailer permit (boat launch fees still apply), Free swimming during the swim season, Free admission to Ardenwood Historic Farm on NON-event days, Free Black Diamond Mines Underground tour, Subscription to Regional in Nature (an activities newsletter) and Compass, Camping discounts: $10 off per night November-March and $5 off per night April-October on one campsite only ($8 reservation service fee applies), Discounts from Urban Park Concessionaires, and 50% off one-hour tram tours at Angel Island State Park.