>Not so fast. Did you read the article in the Post the other day. Advance sales are pretty dismal right now.<
And if word continues to remain good from Seattle, that will change immediately. I'm sure there was a certain amount of "guilt by association" that the group sales agents and other advance ticket buyers were feeling after getting burned on the Disney shows. I think people are taking a wait and see attitude, but will buy if it does well in Seattle.
Also Riedel stacked the decks a bit against Shrek. It previews and opens later than Billy Elliot and would naturally have a softer advance than an already known and proven commodity like Billy Elliot.
Begin at the beginning and go on till you come to the end: then stop.