For transportation, it's best to have a rental car or use ride-sharing services throughout the trip, as several attractions are not within walking distance of each other. Parking is available at most tourist spots visited on this itinerary. Estimated expenses for transportation would range from $50-$150, depending on the number of people splitting costs and distance covered.
If you have more time, you could add a visit to nearby cities such as Torrance or Hermosa Beach, which offer fantastic beaches, hiking trails and even a butterfly sanctuary. You could also visit the nearby Los Angeles and check out the famous Hollywood sign, Santa Monica Pier, and other landmarks. If you have less time, consider removing some attractions or reducing the time spent on activities to accommodate your schedule. Remember to pack sunscreen, comfortable walking shoes, and a hat to shield against the California sun.