Welcome to planDisney, Mercedes! How fun that your kids are going to be enjoying a trip to The Most Magical Place On Earth with your sister. She can most definitely manage your kids' plans as well as their tickets, and I'm happy to walk you through it.
Have your sister open up her
My Disney Experience account and navigate to "My Family & Friends", which is located in the drop-down menu on the desktop website or in the menu in the bottom right corner of the
My Disney Experience mobile app. From here, have her request to add your children to her Family and Friends list, which she can do easily if she is already connected to you. If you are not already connected, she can search for them with their names and ages. Once you have accepted the invitation to connect, you will go into your own My Disney Experience account and click on the icon for one of your children. You will find an option to allow a connected guest to manage "All Plans", which will give your sister the ability to see your kids' tickets and make plans for them, including
dining reservations and
Lightning Lane selections. Complete this process for each of your children and you're good to go! This process is completely reversible, so you can assume full control of your kids' plans again once their trip is over.
I hope this answers your question, Mercedes, and please let us know if there's anything else we can do to help!
Jessica