The Christmas season is usually one of the most popular times at theme parks like Walt Disney World, and it turns out that even in the middle of pandemic, that's still the case. While Walt Disney World is currently not open to its maximum capacity, all four Disney World parks hit their current capacity over the weekend, showing that there is still a significant demand for the theme park magic at this time of year, regardless of what else is going on in the world.
According to Disney (via Disney Food Blog), all four Walt Disney World parks were sold out of reservations on December 5. While the parks are currently only running at about 35% of max capacity according to statements from Disney CEO Bob Chapek last month, they opened at about 25% of capacity, and so the attendance in the parks has only grown. While the current reservation calendar isn't showing a completely sold out day going forward, it's certainly possible that could happen as people still clearly want to experience Walt Disney World during the holidays.
Whether we'll see Walt Disney World increase capacity limits right now or not is hard to say. The current limits are likely in place with the understanding that proper social distancing and other precautions can still be managed even if the parks are "full." While I'm sure the resort will increase its capacity as soon as it is able to do so, Disney has also shown a willingness to take things slow in order to be certain that safety measures are followed. Walt Disney World has already announced that the parks will not remain open until midnight on New Year's Eve, as has been the tradition in other years, so Disney fans looking to celebrate the new year will need to make other plans.
This is, more than likely, a seasonal bump and crowds will start to drop back down again after the holidays are over. The first couple months of the year are frequently the slowest period at Walt Disney World. However, it's also possible that this is part of a larger trend of consumer confidence and that we'll continue to see crowds at higher levels going forward. Even during Disney World's slow period it likely was more than a third full, so it won't take much of an interest for the demand to out pace the supply of available reservations.
There are, as you might expect, a number of different opinions concerning the fact that so many people are heading to Disney World. Since the global pandemic is far from completely under control, many are concerned. Having said that, there have been no major outbreaks traced to Walt Disney World and so it appears that the health and safety measures being taken have been sufficient.