Attended the party last night for my birthday, and now I will need to think very seriously about doing other ticket based parties in the future. My boys and I have done the Christmas party multiple times with great results and had planned to again in December, but now I doubt I will. I have no idea how many tickets Disney is selling, but last night was wall to wall people at times, busier than I have seen it on the majority of normal park days.
We could not even move when walking in Frontierland to Fantasyland, and you couldn't even get near the Haunted Mansion to see the festivities in front let alone ride it. Waits for some of the TOT lines were really long, often winding up and down walkways and roped off sections. People were crammed in for the fireworks. We staked out a seated spot for my 78 year old mom an hour early and it was wall to wall people in front of us with kids on shoulders by the time the castle show and fireworks started. Overall, I had a decent time, but definitely not worth the price of the ticket to me. We basically paid $96 a ticket for a small bag of candy, the parade and the pleasure of collecting the candy all night. I know there will likely be those who will say they had the opposite experience, but I know that when I can't even move and it isn't the night rush after the fireworks, it ceases to be fun to me.