We were at the party Friday night (Oct 9) and had a great time! Thanks to everyone here for all of the information, tips, suggestions, etc.
We arrived at 4 pm and went right in and got our wristbands. We walked right on to several rides, which was really neat for us since we usually go in July when it's much more crowded. We rode a few rides and got some dinner before the party started.
It was SO hot! We decided to take costumes in our backpack so my DDs could change into their costumes when it cooled off a bit. It never really did cool off much but they changed into their costumes right before 7 pm. Although the maps for the party say that Merchant of Venus is the official location for party merchandise, they didn't have the pins (nor did I see any official party shirts/sweatshirts, etc.) and said we had to go to Uptown Jewelers on Main Street to get the official pins. We got there about 7:10 and three pins were already sold out (not sure if they were sold out entirely, or just the quantities available for that night?). We waited in line for about 10 minutes and each got one of the Tinkerbell pins. They're really cute.
My girls didn't want to do any character pictures or the dance parties. All they wanted to do was rides, trick or treating, and see the fireworks and parades. We got lots of candy (a decent amount of chocolate, although it was so hot that much of it melted -- but it's still edible! LOL) and rode every ride they wanted to ride at least once. We watched the fireworks from the bridge from Liberty Square (?? I think that's where we were) and then made our way back to Frontier Land for the second parade. We loved the parade!! It's wonderful.
Although we weren't looking for characters specifically, we didn't see many as we went through the park. We saw Alice and the Mad Hatter on the trick or treat trail -- in fact, they were taking pictures with one family and so the CM urged us to get in line to see them since there was "no line" and so we did...and then another CM came and told Alice she had to leave. I was disappointed...my girls didn't really care because they didn't want to do pictures anyway (LOL), but they had a fun little chat with Mad Hatter. We saw Snow White with some of the dwarves, but those were the ONLY characters we saw. Again, we weren't looking for them but I kind of expected to see them since we went to or by several of the locations where they were posted as being. Of course, we were probably just walking by at the wrong time.
All in all, we had a GREAT time and we're already planning to go back next year!