What I recommend to do first is to go on the Disneyland Railroad (an authentic steam-powered train) that takes 18-minutes to go around the entire park, stopping at different lands along the way.
You can go in of a morning one day, come back at night to watch the fireworks or Paint the Night Parade, and you can have rest days. Then you won’t be rushing and exhausted the whole trip.
So say you want a FASTPASS for The IncrediCoaster in Disney California Adventure® Park, you go to the ride, and there will be an area with machines that give you the FASTPASS.
So as you can see, there is a lot of lands, which means lots of rides. And don’t forget the parades and shows.Also you meet characters, and have to visit all the stores. You just have to. So yeah, there is LOTS to do. In little time.