In terms of ride support, rest stops, and sag patrol, you can't do much better. Good cue sheets, and a well marked course. And lots of riders, so you can always find someone else riding your pace to ride and chat with to pass the miles. At least that was how the one I rode was.
I don't know the setup for your ride, but if you have a friend who has done it before, you might want to pick his/her brain regarding "the other stuff." In my case, the first day we rode down to a college campus, spent the night in a dorm room, and continued on down to the completion point. They put us 2 to a room, and when you registered you could specify a room-mate, if you had a friend who was riding. Also, a bud who's done it before will have the inside track on what to take, the dining situation, etc. etc.