They have data that it draws significantly more people to the resort than were already there? Basically attendance at the resorts would be up 5% (or whatever significance level you are using) if they had a parade vs not? If this is true, why did they go 10 years without a night time parade at MK and eliminate parades from every other park. I'd venture to guess they had data that shows E tickets are the only thing to bring more people into the parks which is why they have been so quick to eliminate the extras. And it's possible they have figured out that the extras were not as unimportant as they thought. Sure, the large jump in attendance will happen for the new big things. But keeping people coming back and mitigating the valley after that climb might be more about those extra things they had been ignoring/eliminating. Again, I'm just taking guesses at this point, but I struggle to believe with how Disney has operated the past decade plus, they would eliminate all those parades if they knew it meant more people at hotels/parks.