One transition note: the bike racks are not numbered on the south side -- the side you approach when coming in from the swim. Which means that if you are looking for your rack by the race number sign after the swim, it's not there. So make sure from the swim out you can find your bike using permanent landmarks: count the racks; relative to light poles, trees, grass dividers, etc.
(It is possible the signs will be there race morning. I talked to one coach this morning who was livid over this and was going off to find the Race Director. But remember you should always look for things that can't move or disappear on you.)