I've been in contact with the specialty cruise people and they were selling cruises for two separate July 4 shows. If there's only going to be one show a lot of people are going to be very disappointed.
I've been at WDW the last few years over the 4th. So I guess you could say personal experience. But we all know everything is subject to change at any time at WDW.
Sorry, no, although I heard 8 and 10, and 10 and 12 batted around during the conversation. Apparently, even the specialty cruise people don't know yet.