There is an Old Town Trolley in San Diego, with the trolley station right beside the ship. A day pass costs $36 and you can get on and off at any of the 8 stops.
There are many things to see, including the zoo, Balboa Park and Petco Park.
The trolley runs out to Coronado Island, where there is an old hotel. I got off here and walked around ..... very nice.
Before you go on the cruise, look at their website, and plan what stops you would like to get off at. You can even buy tickets on their website for $32.40.
Listen for when the bus driver calls out questions and if you know, be sure to answer, because you will win one of these tickets, which will give you a free tour. I answered one about an old movie star, and next time, free tour.
Photos belong to Dorothy Lloyd.