I took pictures of Fantasmic last fall with my S2IS. I used the night mode. For sitting way up in the back, I think they came out well!
You can see them here...
http://new.photos.yahoo.com/album?c=ldibo2002&aid=576460762307650583&pid=&wtok=NlaNXKt6FipyXka6gwgF8Q--&ts=1158348245&.src=ph...