We are getting married in another city than we live in so almost everyone will need to drive (about 2 hours) to this city for the wedding. Yes, technically we have the room at our venue for these family members, but important people are on the "B-list" because of these family members (who probably are not coming).
Here is the bigger issue. My fiancé's sister is getting married 7 months before we are and she (let's be honest her mom) is inviting every family member totaling around 150. (They are having over 300 at the wedding). All of the people on the list of 55 are invited and a very good chance will be at this wedding.
How do we tell my future MIL no to her complete list of people without causing drama? Can we send an announcement rather than a Save the Date/ Invitation? Again my fiancé hasn't see most cousins in 10+ years. He hasn't even met some of his cousins but they will at his sister's wedding 7 months before ours. I understand that his mother doesn't want to invite some people to his sister's wedding and not to ours.
PS. I do not believe in the bride's parents get a third, groom's parents gets a third, and bride/groom get a third. This is our wedding and we want the most important people to us to be at the wedding. My family is paying for the entire wedding and is having a second reception after the wedding in my home state for those family friends. I have a very small extended family, but we are very close and so everyone was invited from my family (25 total).