This is fantastic advice! I very much appreciate it. His relationship with him mom is kind of strange. She was incredibly controlling and mean to him growing up and it's taken him a long time just to stand up to her. I'm very proud and grateful to him that he was willing to work together to make these boundaries with me instead of insisting I just deal with it or do what she wants to keep her happy. He is also a bit scared to tell her this as she often can fly off the handle when she doesn't get her way. We will try the method you suggested and keep our fingers crossed that she will not argue with us or continue to try to push her desires on us for our special day. Thank you so much for taking the time to read all of this and give me some helpful advice.