Hello there, Leonardo! Welcome to planDisney and thanks for sailing to us with your question.
Sailing aboard the Disney Cruise Line is an exceptional experience for guests of any age, but there are a few rules when it comes to traveling with minors. Minors under the age of 18 not traveling with a parent or legal guardian must be accompanied by an adult 21 years of age or older in the same stateroom. As you are currently 20 years of age, you would also need to have a Guest aged 21 or older in your stateroom.
As your sister would be traveling without her parent or guardian,
The Authorization for Minor to Travel without a Parent or Legal Guardian form would need to be filled out by your parents and the document would need to be presented by the authorized adult during check-in at the port terminal.
I hope that information answers all of your questions! For a deep dive into the
booking terms and conditions, you can follow this link. I'm hoping you can arrange for
family fun and happy memories onboard a Disney Cruise Line ship in the near future! If you have any additional questions, please cruise our way again.
Happy Planning!
Adrianna