It is definitely worth a try, but be up front with the Fraternity about your situation and your expectations. It isn't fair to them for you to mislead them.
However, I think its great to experience this side of American culture. My sister, who is an Aussie native, just left last semester to go back home. She was an exchange student for a year, and we loved having her. Fair warning though, she did say she had a hard time accommodating to the culture of greek life.
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