As our families get more complicated, so do the holidays. Most modern families no longer consist of Mom, Dad, 2.5 kids, and one or two adoring grandparents. Instead, you’re dealing with ex-spouses, their new partners, and a mix of children, step-children, and various half-brothers and sisters. With that, a lot of complications get added to your already busy holiday schedule. While each blended family is different, there are some things you can do to simplify the situation and make sure everyone involved gets to enjoy the holidays. Here are three ground rules that have served us well when dealing with these compliction. Find Common Ground When Faced with Complications No matter how strained…