It's fairly common, really depends on who is having conferences/conventions in the area. Uni does it a fair amount as well. Think Microsoft has rented out both US and IoA for the night when they are in town for Ignite (25k attendees or so). I think the early closure is a bit more unique, usually they will just take it from like 9P - Midnight, basically private extra magic hours type scenario.Does anybody know how often they've done this in the past (at any of the parks)? And do we think it's going to be more common?
What after hours event has had only 3,000 people in the last 20 years?It's probably cheaper to rent out a park than people might think.
Disney sells After Hours events that generate (estimating) 3,000 people x $150 = $450,000.
That's small change for many large companies.