Welcome Bianca. Thanks for stopping by the Disney Parks Moms Panel.
I am happy to hear you are planning to celebrate your son’s birthday at
Disney World, the best place on Earth for celebrations.
During Christmas holiday, Disney Parks tend to be very crowded. If you are planning to visit WDW in December, I suggest you book your vacation for early December, on the first or second week; or if you prefer in January, consider the second week for beginning your magical vacation.
If you are looking for detailed information regarding crowd levels, I suggest you visit easywdw.com for their crowd calendars. I like to check them when I am planning my own vacation.
Please, let us know if you have further questions.
Wishing you a magical celebration!
Gina V.