Hey there, Lisa!
You sound like a planner after my own heart! The sooner I can start, the better I can budget and make sure that I choose the best options!
Currently, dates to book a Disney vacation are open until December 2017. Typically, guests are able to make resort reservations about 12-18 months in advance.
For your December 2019 plans, I would start looking for dates to open up around August-December 2018.
In the meantime, continue to visit the
Disney website and decide which resorts, attractions, and shows you think your granddaughter would enjoy best!
Also, be sure to follow the
Disney Parks Blog, as they have up-to-date information about all things Disney!
Enjoy planning your Disney vacation! If you have questions about anything, please visit with the Disney Parks Moms Panel again!
Happy planning!
Korliss