Same here, flights already booked for early September and with things at work I can't reschedule anyway. Nonetheless, I'm going to be naive and stay positive till it's on the site of WDW

At the moment the park hours for September 1st still show a closure for MK at 7pm. Hopefully additional dates will be released at a later date when the other parties sell out.
Otherwise I'm going to enjoy the money I save, and hope the first weeks of September will be quieter due to people booking based on the parties.