So, I told my mom that due to our strict wedding budget, I would not be inviting anyone from her side of the family other than her, her husband, and my three half-siblings. I have not seen anyone from her side of the family in over 10 years. None of them have ever met my FI (we've been together for 7 years). I don't feel like I need to invite people I don't regularly associate with, especially when I can't afford it. My mom got very upset and said I can't just not invite family, and started telling me a story about this family-friend of hers that makes quilts and how he was so excited to make a personalized quilt for our wedding and will be so hurt that he's not invited...etc. I have never met this man and could care less about his quilts. Obviously, I'm not inviting him or anyone else - but I'm worried that they will show up since my mom knows the time and place of the wedding and probably has already shared some details with people who aren't invited. What is the appropriate thing to do if someone who isn't invited shows up???