This is good for up to 20 children and 25 adults.  It includes 20 invitations and 25 adult passes, rental of the Birthday Party Room for 2 hours, guided tour thru the zoo, animal presentation in the party room, tablecloths, plates, cups, forks, napkins, Treasure Hunt with Goody bags, birthday cake and punch.  It also includes one annual family or grandparent membership at the zoo.