Last fall was our only trip during Halloween time at Disneyland. We wanted to go at that time partly because we'd never experienced Disneyland decorated/themed to Halloween, and because I had just read "The Halloween Tree" with my daughter and wanted her to see the tree in Frontierland. Well, we were there for five days, and I still forgot to go look at it with her. On the one hand, it's good that we were having so much fun it slipped our minds, on the other hand I'm really annoyed and kicking myself. We probably won't go back there in the fall for a long time, so I missed a once in a (childhood) lifetime chance for it. Not exactly a big deal, but it really bothers me for some reason.
Do you have any Disneyland missed opportunity experiences?