Disney World has a habit, few and far between as it may be, of renting out their park for a few hours for private events. It needs to stop.
On June 5th, Hollywood Studios will close at 7:30 p.m. in order to host a private event. According to a report, the SAP Sapphire & ASUG Annual Conference Orlando will be held at Studios. The hours will be from 7:30 to 11:30. Normally, the park closes at 9:00 for guests.
For many guests, the closure of a park early doesn't change the ticket prices for guests even though the park will not run for a full daily schedule.
Disney doesn't shut the doors often for non-Disney conferences. They will sometime close a park early to celebrate milestone cast member achievements or they may shut down early for a private ticketed event like Mickey's Not So Scary Halloween. The latter takes up a lot of evenings from August until the end of October, and no, they too don't change the ticket prices for those attending the park and not participating in the after hours event.
It is odd that more people don't complain about the pricing on days when parks are closed early for other purposes. Disney definitely gets to double-dip on the gate prices when they do this, as after-hour events also will cost a separate ticket.
For the June 5th event, Hollywood Studios, according to AllEars.net is sold out for the day. That makes sense as many guests who will attend the conference party will also likely head to the parks early. Honestly, I don't know why you would want to. 7:30 to 11:30 is plenty of time to take in all of the attractions at Hollywood Studios multiple times.