Is everyone a California resident, or at least the adults? A Southern California resident? If so, join the San Diego membership.
See:
http://www.sandiegozoo.org/membership/
Dual and single membership benefits include:
Unlimited admission to the San Diego Zoo and the San Diego Zoo Safari Park for one full year
Two Super Discount Admission Coupons for your guests ($54 value)
Free Africa Tram at the Safari Park (save $10 each time)
Free Skyfari aerial tram at the Zoo (save $4 each time)
Four discount guest coupons (a $16 value)
Four 2-for-1 Zoo Bus Tour coupons (a $34 value)
ZOONOOZ® magazine subscription (a $25 value)
Member specials
Koala Club benefits include:
Unlimited admission to the San Diego Zoo and the Safari Park for one full year
Free Africa Tram at the Safari Park (save $7 each time)
Free Skyfari aerial tram at the Zoo (save $4 each time)
One free pass for a Zoo Bus tour (a $5 value)
Diamond Member benefits include:
Unlimited admission to the San Diego Zoo and the Safari Park for one full year
Two Super Zoo Discount Admission Coupons for your guests ($54 value)
Two Super Park Discount Admission Coupons for your guests ($54 value)
Free Africa Tram at the Safari Park (save $10 each time)
Free Skyfari aerial tram at the Zoo (save $4 each time)
Four discount guest coupons (a $16 value)
Free parking at the Safari Park (save $7 each visit)
Four 2-for-1 Zoo Bus Tour coupons
ZOONOOZ® magazine subscription (a $25 value)
Member specials
Membership rates:
Dual Membership $109* (2 adults in the household)
Single Membership $88* (1 adult in the household)
*Valid for ZIP codes 91900-92899 only
Koala Club
Koala Child $39* (per child ages 311)
Koala Junior $43* (per child ages 1217)
*Valid for ZIP codes 91900-92899 only
Diamond Member $149*
One adult with one accompanying guest OR two adults in the same household (benefits include free parking at the Safari Park). Become a Diamond Member!
*Valid for ZIP codes 91900-92899 only
*They used to give 2 free tickets (adult or child) with the dual membership.