Due to the relatively good weather in San Diego all year long, family attractions don't have close for the "winter".  Here are some of the places you may wish to visit while in San Diego for SolidWorks World.  Here are some ideas.

San Diego Zoo

http://www.sandiegozoo.org/zoo/plan_your_trip/hours_directions

Sea World San Diego

http://seaworldparks.com/en/seaworld-sandiego/?__utma=1.163482254.1326491926.1326491926.1326491926.1&__utmb=1.3.10.1326491926&__utmc=1&__utmx=-&__utmz=1.1326491926.1.1.utmcsr%3Dgoogle

Legoland California

http://california.legoland.com/

San Diego's Downtown

Creation of downtown areas for denizens has become an art form by its own right in California.  Practically every little town to big city has a developed downtown.  San Diego is no exception.

http://www.sandiego.org/article_set/Visitors/32