Hi Marie, welcome to planDisney!
GOOD NEWS!
Theme park tickets are not officially assigned to a Guest until the Guest enters the theme parks. When a Guest enters the
Disneyland Resort Main Entrance Turnstiles, the Cast Members there will scan the ticket and take a picture of each Guest to assign the ticket to them. So, if you purchase tickets for your group of five, and one of the party members cancels, that Guest is free to use the ticket another time!
As you get ready to purchase your tickets, I do want to make two recommendations. First, I personally am a fan of the park hopper tickets. Having the option to "hop" between
Disneyland Park and
Disney California Adventure Park is huge! It lets you maximize your day and gives you full control over your day.
I also recommend purchasing the new
Disney Genie+ service. I recently visited the Disneyland Resort, and I was able to save a ton of time by accessing the
Lightning Lane entrances for certain attractions, instead of having to wait in the standby line. AND you also get unlimited
Disney PhotoPass Digital Downloads with your purchase of Genie+!
I hope this information helped!
See ya real soon!
Jin