I think it's great that you are exposing your niece to alternative lifestyles. And I have no problems with alternative lifestyles. But Arisia is a Science Fiction convention, not a poly con. And when the Alternative lifestyles panels outnumber the Art, Filk and Costume panels combined, I think that is excessive. There is a place for alternative lifestyles discussions at Arisia, (at any sf/f convention) they just should not be the focus.