Greek life is not a main part of life at Iona, as it's pretty low-key and seems only useful for parties. There are no actual houses for sororities and fraternities, and Greek life seems nonexistent at times, with relevance only during Greek Week and sponsored events. If you do want to join a Greek organization, there are more than enough options. It is a way to get involved if you are feeling lost and are looking to make a good group of friends. Greek life does sponsor events on campus, so its presence can be seen if you pay attention.
The sororities seem to have more of a presence than the fraternities, as sororities have more members that are actively involved with other organizations. Certain fraternities and sororities do have a bad rap on campus. Although this may sometimes be the case, it does seem at least that every student knows someone from Greek life, and there are a lot of good people in them. Greek life is not nearly as big like at other campuses and does not control social life, but these organizations do have good parties on occasion.