Hello there Anna, welcome to planDisney!
You can definitely purchase a 2-Day ticket and add the
Park Hopper option. When you go to purchase your
theme park tickets, you can select "2" for the number of days you'd like to visit, then select the number of tickets you'd like to purchase, and then you'll select your ticket type where you can add on the Park Hopper option.
Once your purchase your tickets, you'll also be prompted to make your
theme park reservations for each day you plan to visit. Since you will have a Park Hopper ticket, you can choose your starting park for the day, and then have the flexibility to hop over to the other park when Park Hopper hours begin, which is currently at 11:00 AM. I always recommend adding the Park Hopper option since it is so easy and convenient at the
Disneyland Resort! You can easily hop to both parks within just a few minutes, and get to experience the magic in both parks.
Since you'll be visiting during the
Disney100 Celebration, I highly recommend trying to see the
Wondrous Journeys nighttime spectacular at
Disneyland Park! The music is amazing, and the show will take you through an adventure featuring all of your favorite Disney movies and stories throughout the years. You can find the
daily showtimes on the Disneyland site or
Disneyland app.
I hope this information is helpful for your upcoming trip Anna! If you have any other questions, please come back to planDisney!
Have a magical day!
Melissa