My wife (she doesn't ride) insists she is not going to be one of those wives whose husband disappears from the face of the earth, so I carry a SPOT satellite locator (see link below). She'll at least know where to look if something drastic happens. I haven't followed through on it yet, but I've meant to carry some sort of ID and contact info on my person in case there was an incapacitating accident of some sort. I've worked in an ER, and I'd say it is unlikely that ID in your bags would find its way to the ER with you.
But that's all a downer: Have fun with it. Riding up from Orlando through GA you'll be picking up some conditioning by the time you need it.
link to SPOT locator site: http://www.findmespot.com/en/