Hi Kate,
Welcome to planDisney! We often take multi-generational vacations in Disney World, so I know how special this vacation will be for your family.
Since your mom booked the reservation, she should be able to modify it from her My Disney account. She can log in and
visit “My Plans,” then scroll down to find the resort reservation. If there is an option to “Modify Reservation,” she can click and edit the Guests listed on the reservation. You’ll need to be connected through your Family & Friends List for your mom to add you to the reservation. If she is unable to modify her reservation online, your mom will need to call the number listed under “
Disney Resort Hotel Reservations” for assistance from a Cast Member.
Once you are added to the reservation, you can begin making plans!
Dining reservations open 60 days in advance of your stay, so according to your travel dates, you should be able to book those right away. If you are purchasing
Lightning Lane Passes, as a Disney Resort Guest, you can purchase and make selections 7 days before your check-in date for the length of stay up to 14 days. Since you mentioned you wanted to “book the three parks,” I wanted to mention that
theme park reservations are not required for date-based tickets. You will need to make a theme park reservation if you have student group tickets, sport and convention tickets, Military Salute tickets, Annual Passes, Florida Resident Discover Disney tickets, or any other tickets not mentioned.
I hope you have a great family vacation, Kate. If you need any more help, please come back and
ask another question at planDisney!
Enjoy making magical memories,
Kaitlin