If we stayed 7 nights at DLR. Bought park passes for 3 days. Is there enough to do within 100mi worth seeing the other 4 days?
I would argue definitely yes! This past spring break we started in San Diego and finished in San Francisco. We bought the CityPass tickets for Southern California, which put us in Disnleyland Park and Disney California Adventure for 3 days. We stayed in a 2BR villa at the Grand Californian for 4 nights. We also had a shorter return trip to Southern California for the Tournament of Roses Parade a few weeks ago and stuck around the LA area.
Some of the things we did on our trips:
In the San Diego Area:
San Diego Zoo
Old Town San Diego
Hotel Del Coronado (inspiration for the Grand Floridian)
Sea World (although it did not really knock our socks off)
In the LA area:
The Grove/Farmers Market
Crystal Cove State Park (awesome state park on the coast)
Universal Studios Hollywood
Hollywood and Highland/Hollywood area
Stalking some filming locations (we found the Father of the Bride house and the Dunphy family's house a couple of weeks ago, and it was fun looking around those areas)
In the desert:
Palm Springs
Palm Springs Aerial Tramway
horseback riding near Palm Springs
A very good thread on this topic can be found here:
http://forums.wdwmagic.com/threads/...-california-thread.872243/page-5#post-5877669