The San Diego Zoo Safari Park is basically a big drive-through wildlife park where you see animals in large, naturalistic enclosures rather than traditional zoo cages. Expect a mix of open-air safari trucks or buses that get you close to rhinos, giraffes, and antelope, plus walking areas with gorillas, tigers, and birds. The experience feels more like an African or Asian wildlife park than a traditional zoo visit. It takes a full half-day or more; you'll do a lot of walking between exhibits and waiting for the vehicle tours. It's genuinely different from the main San Diego Zoo downtown.
Best time to go is spring (March-May) or fall (September-November) when it's cooler and the animals are more active. Summers get brutally hot and crowded; winters can be pleasant but some animals hide from the rain. Expect to pay around $80-130 per adult depending on whether you add the standard vehicle safari, a more exclusive tour, or just do the basic entry with walking paths. Kids are cheaper but still not cheap.
Honest tip: Spring is worth it for the baby animals and milder weather. Skip the balloon safari or overly expensive behind-the-scenes tours unless you have money to burn; the standard safari truck ride is plenty good. Bring your own binoculars and water. If you're short on time or budget, just do the regular zoo instead.