Although I can't remember the delivery times on mine (have had 2 done) I highly reccomend using the iPhoto PLUGIN from
MyPublisher. It acts as normal until you go to order the book from iPhoto, where instead of uploading to the Apple service it uploads the book to MyPublisher, which has higher quality books. (And amazing prices) The 2 I've done have both been with them and I am extremely happy.
If you are interested, I have a coupon for them that gives 25% off $50 and 50% off $100 orders.