On a national level, all sororities promote sobriety. If the chapter you are thinking about joining insists on you drinking, it's not the group for you. They should respect your religious convictions.
My suggestion to you is to visit the national web sites for all the sororities on your campus. Research their history, mission and goals. Compare what you learn to what you see when attending Rush. That will help you decide which group lives up to their national office, and your, expectations.
You can't decide which group to join until you go through the Recruitment process. You will be required to visit all the NPC sororities on your chosen campus. The NPHC sororities (those designated as historically African-American, such as Delta Sigma Theta), conduct their intake process and new member education periods much differently than the NPC sororities.
For more information on Rush, please visit this website:
http://panhellenic.tripod.com and click on the link for Sorority Rush FAQ.
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Fraternally,
Barbara
Zeta Tau Alpha Alumna
If you have to go around telling everyone you're in charge you're not much of a leader.