I know the rush rules hurt me many times. First time was spring freshman year (formal) I had this Rho Chi that was a MAJOR b****, and would not leave me alone. I dropped out of rush before the first party. That ruined my chances to do informal in the fall, and then I had surgery a couple days before rush this past spring. I know if it wasn't for a lot of the rules the NPC sets down, that'd I'd probably already be an initated member of a sorority.
Now I'm a Junior rushing in the fall... makes me look old.