Howdy, Rebecca! Thanks for bringing your question to planDisney!
I am so glad that you are considering upgrading your ticket to the Park Hopper option! With Disneyland Park and Disney California Adventure Park mere steps away from each other, park hopping could not be easier! To upgrade your ticket, simply stop by a ticket booth at the Disneyland Resort. You'll keep your theme park reservation that you have in place that day and then at 1:00 p.m you can hop to the other park.
Since it looks like you'll be visiting during
Halloween Time, I wanted to let you know about a few experiences that you won't want to miss! First, Haunted Mansion Holiday is a must-do. The entire attraction is transformed with a
Nightmare Before Christmas overlay, including a show-stopping spooky gingerbread house that has a unique design every year. Over in Disney California Adventure Park, you'll want to explore the Cars Land Haul-O-Ween makeover with Mater's Graveyard JamBOOree and Luigi's Honkin' Haul-O-Ween. There are also tons of special Halloween treats to enjoy and
you can now even mobile order special goodies like caramel apples, marshmallow wands and, my favorite, churro toffee from Marcelline's Confectionary, Trolley Treats, and Candy Palace and Candy Kitchen.
I hope you have a great time park hopping at the Disneyland Resort!
-Linda