It is a rush, but it's only for that one night and is not a week long process of visiting houses and getting bids. To most BGLO's, unless you are ineligible at the time, when you attend the rush you are saying that you want to become a part of that organization. As for the intake process, each BGLO's is different with in ourselves, so you will find out about the intake process at the rush and even more about it once you become a candidate for membership into that particular sorority.