Rip we plan to balance out the numbers to try and achieve a historical ratio. This is, in the 8th vs LW thead on the Spec Events board, we asked everyone to email the CO of the group the wanted to fly with by 2000Z Saturday. This way we can plan ahead and let those who register in advance know if they get thier request or not.
I'm also figuring that we'll have some who just show up spur of the moment, and they'll be assigned as needed. So people who register by Saturday who get reassigned, may be moved back to thier requested group as walkins appear =)