Welcome to planDisney, Tony!
Your trip to the Happiest Place on Earth is just around the corner! How exciting!
You can most certainly upgrade your
ticket to a Park Hopper ticket when you arrive at the Disneyland Resort. Simply stop by a ticket booth and a friendly Cast Member will be happy to help you out. You will keep your reservation for Disneyland Park and start there that day. Then, at 1:00 p.m. you can hop over to Disney California Adventure Park. If you want to reverse that order, you will need to cancel your Disneyland Park reservation and make a new reservation to start at Disney California Adventure Park after you have upgraded your ticket.
While subject to change, I just took a look at the
theme park reservation availability calendar, and both parks currently have availability on July 24th. So you should be good to go. On the day of your visit, Cast Members at the parks should be able to tell you whether there are any capacity limits that would prevent you from hopping.
I'm so excited that, with your Park Hopper ticket, you'll be able to enjoy Star Wars: Galaxy's Edge and the all new Avengers Campus during your visit! Be sure to read up on how to join the virtual queues for
Star Wars: Rise of the Resistance and
WEB SLINGERS: A Spider-Man Adventure before your visit. You'll need to have the Disneyland app downloaded on your mobile device and your tickets linked to your Disneyland Resort account.
I hope your visit to the Disneyland Resort is full of magic and memories!
-Linda