i know there are no rules regarding who i "have" to invite, but i am having difficulty where to draw lines. i would like to invite my first cousins and aunts and uncles since we spend every holiday together and are relatively close. is it rude not to unclude second cousins and great aunts and uncles? i rarely ever see them and they add quite a bit to the cost. i'm just feeling a bit guilty about inviting the first tier, but not the second and so on... what do you knotties think?