Hiya, Joel! Welcome to planDisney and thanks for your question!
It sounds like you've been reading up on the new theme park reservation system and I'm glad! This is a crucial step in making sure you have everything in place to visit the parks. You can most certainly cancel a theme park reservation and
make another reservation using the same ticket for a different day. You will just want to be sure that you check the
theme park reservation availability calendar before cancelling your reservation and making plans for a new day. If you have 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.
After your tickets and theme park reservations are in place, be sure that you have the most up-to-date version of the Disneyland app downloaded on your mobile device. This will be your best tool to navigate the parks efficiently during your visit. You can use the app to mobile order food, see current attraction wait times, and the app is the only way to join the virtual queues for
Star Wars: Rise of the Resistance and
WEB SLINGERS: A Spider-Man Adventure.
I hope you have a magical visit to the Disneyland Resort!
-Linda