They did make an announcement that we were allowed to wear booties. There was a company selling them at the expo (and sold out quickly) I hadn't seen them before this.
I'm doing the Vineman Half on July 30th. This is my year of 1/2's - plus, a couple centuries and the New York marathon. 2007 will be my first Ironman. I haven't decided which yet, but probably either Coeur d'Alene or Wisconsin.