Just an FYI, I have had issues in the past with “linked” reservations. I usually just search for the other reservation and it then is in my list of cruises. The issue is I am then on the app, able to go into that reservation and see their on board account balance, update their credit card info, etc. I have complained twice before that this is not right and should not be happening. Some of that is private information. Also there seems to be no way to remove them myself, both times this had to be done on the ship.