My wedding is 100 days away and my future in-laws still exclude me from family events

Question: "I have been with my fiance for almost five years. We got engaged almost a year ago. While dating, I always considered his family to be welcoming! He comes from a big Catholic family, and is the second of five kids. I have one sibling (I'm the oldest) and our family is not religious. Throughout our relationship (a large portion of it being long distance; four hours apart), we never spent the holidays together. It's important in his family to spend time with immediate family only. After our engagement, I moved four hours away from home to be where he is. We don’t yet live together because it’s against his religion to live together prior to marriage, but I’m about 3 miles from his family. We spend almost every day together, and I even go to dinner with his family several times a week. I am included in most things. However, when the holidays hit, I’m not.