Howdy, Wendy! Thanks for bringing your question to planDisney!
The first step in making theme park reservations for the Disneyland Resort is linking your tickets to your Disneyland account. You can do this using the Disneyland app or on the Disneyland Resort website by clicking the "Link Tickets" link under the "My Disneyland" menu. Once the tickets are linked, you will be able to
make theme park reservations. It's a good idea to view the
theme park reservation availability calendar to see if there is availability before making any plans. If your complimentary ticket is a Park Hopper ticket, you will make a reservation for the park you want to start at and then at 1:00 p.m., you can hop to the other park.
If you haven't already, be sure to download the
Disneyland app before your trip. The app will be your best tool for navigating the parks efficiently. You'll be able to see current attraction wait times, mobile order food from a variety of quick service locations, and it's the only way to join the virtual queues for Star Wars: Rise of the Resistance and WEB SLINGERS: A Spider-Man Adventure.
I hope this helps. Have a great time at the Happiest Place on Earth!
-Linda