Hi Emily,
Welcome to planDisney and thank you for taking the time to send us your question. I am so happy to see that you are planning on visiting Disneyland Resort shortly, how exciting!
Since you have the Park Hopper Option added on to your
Theme Park Tickets, you can choose either Theme Park to begin and then hop over to the other Theme Park after 1:00 provided there is availability. When you are looking at the
Theme Park Availability Calendar, make sure that you look at the Park Hopper Option, not the one park per day option, as the availability changes based on your Theme Park Ticket type. Guests with the Park Hopper Option must choose from the Park Hopper Availability, in order to visit both Theme Parks. After a quick search, it does look like both Theme Parks are currently available as a starting Theme Park for your preferred date, so hopefully you will be able to secure your reservation soon!
I hope you have a magical time at
Disneyland Resort, Emily. Please come back to
planDisney with any other questions you may have, we are always happy to help.
~Stephanie