For me it's not even so much about the "others" being in the park...which does concern me...but even more than that...they advertised this as a 7PM-Midnight party...now what...the "real" party starts at 7:30PM (or whatever time they get them all out of the park) and we are all stuck in one land DURING the party until Disney gets it's "housekeeping" (party decorations up, day guests out, CM's in costume, candy stations set up,etc) done? That makes me "

".
I didn't pay all that money (we have a party of 5 going) to have them herd us like cattle DURING the stated party hours....when they did it between park close and party opening it was understandable...but now part of my paid party time will be spent waiting for them to clear the areas and get everything set. I was unsure of the changes before, but now I am unhappy and that is a hard thing to do as far as me and anything Disney. Now it really does feel like bait and switch...
And one last question I want answered (so I will email on this)...won't day guests (who paid for their day ticket) be able to get in line up until closing time (which is allowed all other days) and if so, then how long will we be kept waiting for them to clear out??!!
GRRRRRRRRRRRRRR!
Sorry for the rant, it may not have helped anything, but just typing it brought me a bit of comfort.
That said, I don't forsee buying party tickets in the future if I cannot trust what is advertised is what I will be getting. That is really sad.