This sounds like a wonderful event, both the shower and the ROADS!!! activities that have been folded into the day.
However, my attendance will be precluded for a number of reasons. Chief among them are these: my finances do not presently allow for a trip of this distance, my wife is recovering from minor surgery and it would be unwise (in more ways than one) to leave her for what would be at least three days and two nights, and at this moment I'm unsure of how well my vehicle would do on such a long trip.
My best to the parents-to-be, however, and my friends who will be in attendance.