We attended the party on Friday 9/27 and agree the party was packed. We were two adult women, my DSD and myself, and while we really enjoyed it, I don't know that I would recommend it for most. We were not interested in candy or character meets. We just wanted to ride some rides, see the fireworks, and watch the parade. We entered the park around 4:30, there were no lines getting in, and we went right to Cruella's to check in. I was amazed by how empty the park was between then and 6, but that would definitely change. We had FP+ for BTMRR, and then did under the sea because she loves Ariel so we had to fit that in. We used our FP+ for JC, and then went to Skipper's Canteen for our 6:15 ADR. We just had a couple apps and drinks since we were doing Cruella's later.
When we left Skippers around 7:30 the park was just packed. We went to POC and it showed a 25 minute wait, but we waited around 10. Decided to do small world to kill time before the hocus pocus show. Watched most of the show and then went to HM. The wait time was listed at 40 minutes I think, but waited just over 10. Then did People Mover. At this point it was 9:30 so we headed to Cruella's. I know there were some very bad reviews of this experience, but we thought it was totally worth it. Food was average, but we were able to find some items we enjoyed. It was also not crowed at all, allowed us to sit and enjoy a drink (or two), and come and go as we pleased. Cruella was also amazing. She moved around the space and was very entertaining. This was a much different experience than what was described in the early reviews. If you are going to the party with adults only I think this is really a great add on.
We went out to watch the fireworks, and headed back to Cruella's. We sat inside the first time we stopped in, but this time we were able to get a table on the patio right along the railing. We ended up staying and watching the parade from there. We were able to clearly see the headless horseman as well as all the floats as they came by.
Overall we really enjoyed the party, but we go to Disney fairly often and are not really concerned about how much we get done. We liked the new fireworks show, while not better at least it is different for those that have been coming for many years. I think the new parade floats were an improvement as well. But, if we had been there with our kids, this would not have been a good experience. The party is just packed, every candy line we saw was very long, and so were lines for characters or pictures.