Whether the two of you have kids or just love to be around children, a fun date would definitely include stopping into the San Diego Junior Theatre to see one of the troupe's latest productions.
If you and your date want to dress up for something a little different, make plans to take your seat among many like-minded music fans and enjoy an evening at the San Diego Symphony. There are several performances on the schedule throughout the year, so there's always something that you can plan ahead to see. Shows that feature current Tony winners, the music of Burt Bacharach and several pops concerts are just a few highlights of what you'll find on the itinerary, so make sure you get your tickets early to not miss a note of any of these stellar presentations.
Coronado's charm is largely due to it's location and all that it offers in a relatively small area of space. You can drive to it from the San Diego-Coronado Bridge, but if you have the time and want to take in the gorgeous scenery, take the ferry from Broadway Pier instead.