Balboa park offers great museums, gardens, and sites to walk around and check out. You might see the iconic tower of the Museum of Us as you fly into the airport.
Coronado beach is close to the wedding venue and is a beautiful place to check out. The historic Hotel Del is also nearby.
Renting a bike and riding around Coronado is a fun and easy way to check out the island. Here is a highly rated shop but there are plenty around the island.
Little Italy is a walkable neighborhood in downtown San Diego that offers great food, a farmer's market, and Waterfront Park.
The San Diego Zoo is world famous and supports many wildlife conservation efforts. If you ever visited the zoo in Gori, Georgia, don't worry; it's nothing like that. It's located near Balboa Park.
The Gas Lamp is known for nightlife but is also a fun place to walk around and grab a bite. It's near other sites like Seaport Village, the Embarcadero, and Petco Park if you want to catch a baseball game.