Well, technically, you're in North Orange County, but the beautiful beaches of South O.C. are not too far. You have many to choose from. The weblink below may help you decide.
Take the kids to Knott's Berry Farm
8039 Beach Boulevard, Buena Park, CA 90620
Knott's Berry Farm is the oldest theme park in the U.S. , and growing up, I definitely preferred it to Disneyland. They have (had?) amazing funnel cakes.
Visit Downtown Fullerton
Fullerton, CA 92832
Downtown Fullerton is home to shops, restaurants, bars, a museum, an arboretum and a cultural center.
Visit L.A.
Los Angeles, CA 90031
We live in L.A., so we'll have tons of recs for you. Email or call us! The link below is also pretty helpful.
Guisados
1261 Sunset Boulevard, Los Angeles, CA 90026, (213) 250-7600
Guisados is so good, we should probably be hosting our wedding there. There are a handful of locations throughout L.A., but the one on Sunset is our haunt.