To get around Hawaiian Gardens, renting a car is the best option. Travel costs will vary based on the company and the type of vehicle rented. It's also important to note that parking may be limited in some areas, so plan accordingly.
If you have more time, consider exploring nearby attractions such as the Huntington Beach Pier or the Queen Mary. If you have less time, consider skipping Disneyland or the Museum of Latin American Art. Additionally, be sure to check the opening and closing times of each location before arriving to make the most of your trip.