I went to a friend's drop at NAS P'Cola and the club told them they were "required" to buy kegs from them. The class paid for their own kegs from an outside place anyways and all that came from it was the head of the club giving them an earful about how the club provides service for the stud's and need the buy in from everyone, blah blah blah
but if it were me, I would find another place just out of principle