Between Christmas and New Year s is the busiest time of year at Disney World. It is also the most expensive. Spring Break isn t as crowded because not every school is out at the same time, so families vacation all throughout March and April. The week between Christmas and New Year s is an off week for all schools as well as many smaller places like doctor s offices, dentist s offices, etc. There are also a lot of day trippers during these times, and especially this year since the holidays fall on a Friday giving a lot of people a 3 day weekend.Make sure you arrive at the parks early and plan to spend the day in the park. The parks can and do reach full capacity. Also, grab your FastPasses early... they can run out by 10:00am if not earlier depending on the park, if it is Extra Magic Hours, etc.
from dec 21st to jan 1st is literally the most crowded time of the entire year. its much more crowded then spring break time. the parks fill to capacity between xmas day and new years eve. on nye they will fill to capacity well before noon. the wait times are outrageous even for the rides there usually don t have a long wait time. for example jungle cruise which only has a wait time of about 10-30 minutes will have a wait time of about 90-120 minutes during this time. you are packed in like sardines and just walking from point A to point B is like waiting in a line. its soooo crowded that they actually have cast members with light wands directing traffic and saying stay to your right, stay to your right.i mean don t get me wrong it can still be fun and enjoyable but you need to be prepared for LONG days and eexcruciatinglypainful feet.
It will be busier than spring break crowds. Dont expect to get on a lot of rides that day. Most of the day at the parks it will be packed. Lines will be around 2 hours avg. Line for everything including the bathrooms.
Massive crowds, all day, you will feel like a sardine