Hey there, Stacey! Thanks for stopping by planDisney with your question. I’m sorry to hear that two people in your party can’t make it. 
Each 
ticket has a separate 
reservation, so it is possible to cancel for only two people and keep the reservations for the others intact. In your 
Disneyland account, go to My Disneyland, Ticket and Reservation Details, View My Park Reservations, and when you click the Cancel Reservation link, you’ll be given the option to select certain Guests to cancel for.
These tickets will remain linked to your account for future use. Tickets typically have a long runway to use them, or unused tickets can also be transferred to someone else. You can contact 
Ticket Services to confirm the exact expiration date and/or change the name on the ticket.
I hope the rest of your party has an amazing visit! If you’re looking for additional tips, have a watch or listen to our 
planDisney Podcast episode dedicated to Disneyland Resort! 
Adventure is out there,
Kamini