Hey there, Eduardo! Welcome to planDisney. We appreciate you dropping by with your ticket question.
You most certainly can purchase tickets for your cousins either through the
Disneyland app or on the
Disneyland website even if you are not going to go to the parks with them. Once you purchase these tickets, you will just share the ticket information with them. They can download the Disneyland app and create a Disney account if they don't have one yet or sign in to their account. Then they will go to the "Ticket and Passes" section of the app and link the tickets by the ticket ID numbers that you give them. These tickets can be both on your app and on their apps as well without any issue.
When you go to purchase the tickets, it will ask you what day you want to use these tickets on so be sure to get that date from them. When you select that day during the purchase process, you will have
theme park ticket reservations for those dates once the purchase is confirmed. Currently, you need both a ticket and a reservation for entry into the parks.
Your cousins should then be all set to enjoy time at Disneyland Resort!
Eduardo, thanks again for stopping by. Please let us know if you have any other questions along the way!
Carrie