Okay, so I pre-registered and received a pre-registration form as confirmation (nice site feature, BTW). After seeing that the information was correct, I noticed the small type:

"This is your confirmation please take it to the rally with you"

My wife regularly reminds me when I have a "senior moment" (but I can't remember exactly the last time). So I was wondering, what happens if I forget to bring the form? Do I have to -

Re-register and pay again?
Go to the end of the longest registration line?
Wear an official MOA dunce cap for the entire rally?
Pitch my tent downwind of a restroom?