Hey there, Megumi!
A very warm welcome to planDisney! Thanks for bringing your question our way!
I’m sure you’re looking forward to your vacation to “The Happiest Place on Earth!” And, it sounds like you’re already aware of the requirement for making an advanced
Theme Park Reservation. This reservation is required in addition to your valid admission ticket. However, after the reservation system was introduced, the
Disneyland Resort made an update that allowed Guests to make their Theme Park Reservations during the ticket purchase process. So, you may already hold the necessary reservation. If you’d like to confirm whether or not you have a Theme Park Reservation, please log in to your Disneyland Account and select “My Disneyland” then click “Ticket and Reservation Details” from the dropdown menu. Finally, click on the “My Park Reservations” hyperlink. You’ll be able to see Theme Park Reservation details for your entire party. This information can also be found on the main landing page of the
Disneyland Mobile App.
When making a reservation, you will select your starting park. At this time, your arrival window is “All Day.” This means you may enter California Adventure Park at any time during the theme park operational hours. You are not required to arrive by a certain time of day or within a certain window of time. And, because you have a Park Hopper ticket, you may hop to Disneyland Park after 1:00 p.m. on the day of your visit. You are not required to make an additional theme park reservation to visit the second park or hop back and forth between both parks. But, as always, theme park admission is subject to attendance availability and theme park operational hours.
I hope this helps! Enjoy your vacation to the Disneyland Resort!
Tiffanie