MANY were there on my visit. Made for 2 very crowded shows for the party group. Side note - best viewing is going to be where you have a full view of the castle and the forecourt stage.
No - it is right after the first castle stage shows so the hub is packed to the point where you can't move. I would suggest doing the 6:15 before the party starts (with the exception of if you are trying to get a M&G character with a long line). In hindsight, I would have done that - gone to see the Tomorrowland shows, rides, treats and M&G until about 30 minutes before Wishes and then go back there for the fireworks. Watch the second parade and catch the last castle show (not crowded at all).Was the 8:15 show significantly less crowded, without the non-party guests?
No - it is right after the first castle stage shows so the hub is packed to the point where you can't move. I would suggest doing the 6:15 before the party starts (with the exception of if you are trying to get a M&G character with a long line). In hindsight, I would have done that - gone to see the Tomorrowland shows, rides, treats and M&G until about 30 minutes before Wishes and then go back there for the fireworks. Watch the second parade and catch the last castle show (not crowded at all).
The hub was deadlocked from about 7:15pm until after the first parade.