Disney reported a 
7% increase in domestic attendance in the 4th quarter, excluding the effect of a 53rd week this business year.  Looking at just 52 weeks, domestic attendance was up 
5% for the year.
On a per theme park basis, WDW was the most crowded it's been since it was just the Magic Kingdom in the late 1970s:
View attachment 124959
Crowds are not evenly distributed, with the Magic Kingdom leading the pack by far.  Of course, the Magic Kingdom saw only 
14.1M Guests in 1978, practically empty by today's standards. 
The last 3 times per theme park attendance got this high, Disney added another park.
Yes, I know, Disney needs to "fix" its existing parks.  That's a given and Disney is in the process of doing exactly that.  However, it's not an either-or proposition. As I've written before, WDW needs to fix its parks 
and add capacity in the coming decade.
Unless they are going for the Tokyo Disneyland Resort thing, where attendance between the 2 parks averages over 
15M annually. 
Of course, TDL doesn't have DHS or DAK.  Those 2 parks would do really well with 
15M people every day.