My fiance and I are really laid back people, our close friends and families know that and we like being around people who are comfortable. So we are planning on having a casual wedding, my dress wont be extravagent at all, he will maybe wear a tie with a shirt, very simple. Our invitations are not really formal, pretty IMO, but not formal at all.
So today I got 2 email RSVPs one from my Aunt who was curious what we are expecting people to wear (non holey pants, its casual) and one from his grandparents which read "[his grandparents] will be honored to be at the wedding and reception on [wedding date]". To their email I sent a response letting them know that it is a casual backyard wedding, not telling them specifically not to dress up but at least letting them know we want people to be comfortable. I found out later that they had contacted my future mother inlaw and complained about us not inviting a huge amount of his family he is not in contact with and she explained that it was a small laid back casual wedding. My Aunt and his grandparents are from significantly different socioeconomic classes, so the norm is very different. So kinda curious, did I do the right thing by warning them that we are not expecting people to get all dressed up for the wedding, or did I read too much into the formality of their RSVP?