San Diego has various transportation options, including buses, trolleys, taxis, and ride-sharing services. The best way to explore the city is by renting a car as it offers more flexibility and convenience. However, it can increase your travel costs by around $40-50. On the other hand, public transportation is cheaper but can take more time to navigate.
If you have more time, you can visit other popular tourist spots like the San Diego Museum of Art, the San Diego Natural History Museum, and the Birch Aquarium. If you have less time, you can skip either the USS Midway Museum or La Jolla Cove. Also, don't forget to wear comfortable shoes and carry sunscreen as San Diego can get hot during the day.