Hi Jason! Welcome to planDisney! I'm so glad you found us to ask this great question.
I love to park hop when I visit the Disneyland Resort, and I think this is such a smart decision! It's so easy to hop between
Disneyland Park and
Disney California Adventure Park. You can upgrade your
One Park Per Day Ticket to one with a Park Hopper Option at one of the Disneyland ticket booths. It's best to go ahead and upgrade before you arrive. I recommend
calling the Tickets line at 1-714-781-4636 to speak with a Cast Member for assistance. You might also need to make a new
Theme Park Reservation, but you only need to choose the first park that you would like to visit. You can park hop beginning at 11:00 a.m. I just checked the
Theme Park Reservation Availability Calendar, and as of this moment, it shows availability for both park guests with a Park Hopper ticket.
I hope this information helps with your planning, and that you have such a fun visit at The Happiest Place on Earth! Please stop by
planDisney again the next time you want to plan another visit. We would love to help!
See ya real soon!
Smiles,
Lisa