The Grand Californian entrance to California Adventure opens at 9:00AM for registered guests of the 3 Disney Hotels, room keys are rather strictly checked. World of Color Fastpasses (aka Showpasses) are distributed from the Grizzly Rapids fastpass machines. One fastpass per park ticket, and the park ticket must be used for entry on that day.
The California Adventure main gates open at 9:30AM for World of Color Fastpasses, distributed from the same Grizzly Rapids machines.
This happens every morning.
Someone else needs to answer this part, since I usually go to
Disneyland in the morning.