This is a loaded question..
First off you need to decide if you want to visit just 1-park per day or Park Hop with Disney’s Park Hopper ticket. We always suggest a Park Hopper Ticket because everyday brings something different in crowds, ride closures, and likes and dis-likes, and food.
Then choose how many days you want to play…
1-Day Tickets: These are probably the most purchased tickets out there. It’s mostly due to time restraints. You may only have one day in Orange County due to a conference or family event. With this ticket we always suggest getting the Hopper option with it so you can go between both parks. This is especially for people who have never visited before.
You’ll feel rushed to get as much as you can done and we don’t blame you. Try and go from opening to close. Load that fanny pack up with power bars and stretch while you’re in line. 😉
2-Day Tickets: In the 2 day range, the 2-day 1 park per day ticket is the most popular. It gives you one whole day at each park without park hopping. You’ll see a trend here but we always suggest the hopper option for many reasons, one of which is crowds. Sometimes Disneyland Park will be crowded and California Adventure won’t be. It’s nice to be able to move over in this situation.