Loved Disney. We've been to WDW in Orlando 7 times before but had never been to Disneyland. We weren't let down. Because we had mapped out a touring plan before we got there, we were able to do both parks (Disneyland Park and California Adventure) in one day.
I'd strongly advise that you're at the park at its opening. Even when we got there at 7:30, half an hour before the park opened, it was very crowded. The day we went it was very, very hot outside - 110. We took lots of air-conditioning breaks. Even with those, we still managed both parks.
Our favorites at Disneyland Park were Space Mountain, Pirates of the Caribbean, Indiana Jones, and the Haunted Mansion. For Space Mountain, go to it first thing in the morning. The teens were on and off in 20 minutes. We walked by it half an hour later and the line was an hour long. For Indiana Jones, get Fastpass. The standby line is about 2 hours long. We caught the end of the show at the Golden Horseshoe...looked like fun.
At California Adventure, we loved Grizzly River Run which is longer and more fun than the rapids ride at WDW's Animal Kingdom in Orlando. Soarin' is also amazing. We'd gone on before at WDW. We love it every time. The teenagers loved California Screamin'. They didn't use Fastpass and only waited about half an hour. We wanted to go on the new Toy Story ride, but it was broken down and still extremely crowded. I'd suggest getting to that as your first thing in California Adventure. However, we were there during the Toy Story ride's opening week, so things may have calmed down after that.
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