If it is your first day in San Diego, take this tour. It drives a circuit including Coronado Island to give you a lovely overview and some history of the city. Takes about 2 hours to do the circuit. But you will probably want to get off and see some sites. I enjoyed getting off at Old Town and spent a few hours walking the exhibits, shopping and eating great Mexican food. Next place I got off was Seaport Village. I ate some ice cream while listening to a band and walked the waterfront. Then I hopped on the Seal Bus and took that 90 minute tour. I also took advantage of the wifi rent to ride electric scooters sitting about. I also parked in Coronado a couple blocks off Orange street for free to enjoy walking the shops and checking out the Hotel Coronado. I decided to spend a different full day at the Balboa Park area. Some of the other stops I did not take the time to stop off, but at least I can say I saw the areas!