Disneyland theme park tickets and reservations will be an important part of a Disneyland guest’s visit.  When the parks of Disneyland Resort reopen on April 30, 2021, measures will be in place to secure the safety of both guests and cast members.  One of these measures will be reduced park capacity at both Disneyland park and California Adventure park.  Capacity will be controlled through the use of a Park Reservation system which has proven successful at the parks of Walt Disney World Resort.  Here are the details from Disney Parks Blog:

Theme Park Reservations: To enter Disneyland park or Disney California Adventure park, both a theme park reservation and valid admission ticket for the same park on the same date are required for guests ages 3 and up. Guests must have a valid theme park admission ticket in order to make a reservation. Theme park reservations will be limited and subject to availability and, until further notice, only California residents may visit the parks, and in groups no larger than 3 households, in line with current state guidelines. 

The theme park reservation system will launch on April 12, and guests with existing valid theme park tickets can begin making park reservations for the days that their ticket is valid. Theme park ticket sales will resume on April 15, and guests without park tickets may begin purchasing tickets and making park reservations. As a reminder, ticket expiration dates were extended for many outstanding tickets. To accommodate as many types of ticket holders as possible, park reservations for select dates may be made available on a rolling basis. Ticket calendars will be updated on a rolling basis. Check for updated availability.

Here are some key dates to remember:

• April 9: If you currently hold a theme park ticket, you can check available days for your 1-day ticket type beginning April 9 on Disneyland.com/ParksUpdates.
• April 12: The theme park reservation system will open no earlier than 8 a.m. PT on April 12 and guests who already have valid theme park tickets may begin making park reservations.
• April 15: Theme park ticket sales will resume no earlier than 8 a.m. PT on April 15, and guests without park tickets may begin purchasing tickets and making park reservations.

Tip: Be sure to log in to your Disney account first to link valid theme park tickets prior to accessing the park reservation system. See how to make a park reservation, below!

It’s important for guests staying at Disney’s Grand Californian Hotel & Spa who have a theme park ticket to know they will also need to book a theme park reservation, as a hotel stay does not guarantee a theme park reservation. If you are planning a future stay, it’s important to check to make sure there is theme park availability prior to making your resort reservations.  Theme park reservations will need to be made separately.

Guests with Park Hopper tickets may choose, pending availability, which theme park to start their day, when making their theme park reservations, and then will be able to visit the other park beginning at 1 p.m. that day. Guests with multi-day tickets will be required to make a separate park reservation for each day they plan to visit the theme parks.

Park Hours: Upon reopening, daily park hours for Disneyland park and Disney California Adventure park are currently planned to be 9 a.m. to 7 p.m. These are subject to change.

Parking: Theme park parking will be available at the Mickey & Friends and Pixar Pals parking structures, located off Disneyland Drive.

Dining: Mobile ordering will be available on the Disneyland app for most quick service restaurants inside the theme parks. In order to foster physical distancing during this time, we will plan to reopen dining bookings for select locations on April 22, with limited capacity. You will be able to book your dining reservation 60 days in advance on Disneyland.com or with the Disneyland App, subject to availability. Tip: Be sure to have the latest version of the app downloaded and installed on your mobile device.