Hello, I'm not sure what your interests are, but there's always tons to do that doesn't require drinking. Here are a few ideas along with some Web sites you might want to check out.
Theater (I hear 'Q Street' at Speckles is hilarious)
Movies (Great way to stay cool on hot August days)
Hiking (Torrey Pines, Julian, etc)
Day Trips (tour the Hotel Del, ferry over to Catalina, visit Newport or Huntington Beach, drive to Julian, wine tasting in Temecula)
Outdoor Activities (kayak at La Jolla Shores, surf at Tourmaline, pack a picnic, etc)
If none of these things are doing it for you, check out the Events/Entertainment pages of the enclosed Web sites.
Hope you find something that piques your interest!