Wow, this thread has been moving while I was at work!
I don't know the answer, but FYI the Gravediggers also break during the fireworks. You can get a cool picture with the fireworks in the background at the spot where the gravediggers were (next to the water across from Country Bears in Frontierland).
I hit up most of the trick or treat spots, and I saw no Werther's. I did not see the allergy-friendly candy, however.
Cruella was wandering. She did not have a fixed spot. I don't know if she even had a line. If you find Winnie the Pooh and his friends, she was across from them - they were facing her. I believe it was in Fantasyland. I can't remember if it was near the Pooh ride.
I reported in from Main Street Bakery/Starbucks during the party. I got the not-so-poison apple cupcake and the pumpkin cheesecake. The cheesecake was not worth the calories. It was like eating mushy pumpkin pie without the crust. There is a cookie on top and it got all over my hands because you can't eat it with a fork. I was eating in the dark, and I noticed later that I got it on my shirt and shorts as well. The cupcake was okay. The apple flavored cake was pretty good. The frosting was very very very very sweet. Much sweeter than a typical Disney cupcake. There were crunchy things in the cake; for some unknown reason Disney thinks we want our cupcakes to crunch. Note that the other Disney cupcakes I got that week were $5.99 plus tax (unicorn rainbow cupcake at Boardwalk Bakery, mermaid cupcake at Main Street Bakery/Starbucks and cookies & cream cupcake with monorail at Contempo Cafe at Contemporary). This cupcake was $6.99 plus tax.