To get around, renting a car is the most convenient option, as public transportation here can be unreliable. However, taxis and ride-hailing services like Uber or Lyft are also available if you don't want to drive yourself. Expect to spend around $50-$100 per day on transportation. Keep in mind that traffic can be heavy during peak hours, so plan accordingly.
If you have more time, consider visiting nearby attractions such as the Disneyland Park or the Aquarium of the Pacific in Long Beach. If you have less time, prioritize and pick the activities that interest you the most. Don't forget to bring comfortable shoes and sunscreen, as you'll be doing plenty of walking and outdoor activities.