In terms of what counts towards the World Record, does it have to be "And Justice For All" that we get signed or can we get any of Orrin's booked signed? Also, what would be the best plan if we want to get multiple books signed, assuming that they all would count towards the record?
Only the And Justice for All book will count toward the contest, and only if it's purchased that day and signed right away, and unfortunately, only one book per person is allowed to count. Therefore, the "pit crew" that we will have on hand managing this "race" will not allow anyone to have more than one book, or anything other than the correct book, to sign.
I think the best way to think about this is that it is as I said above, a race, and the faster everyone goes and the more they all work to hurry things along, the better chance Orrin (and all of us) will have of being part of something special - namely, a new world record!!