So from the very beginning my parents and I decided that no one will be invited to the wedding unless they are 21 or older. On the inner envelope of each invitation I wrote each persons name out that was invited to the wedding.  I have already got a response where they added a teenage.  So my mom called them to tell them that their teenage is not invited bc it is a 21 and over reception.  The guest said well you should have wrote on the invitation 21 and older so my mom feels bad.  Should she?  We made it clear in the beginning to all friends and family that no one over 21 is invited.  Yesterday my grandmother called me because my Uncle wanted to know why his step daughter wasnt invited who is 20 and why she is invited to the shower.  I am so upset about this how do I handle this?  I do not want to be worried about this the day of the wedding.Thanks