We usually start celebrating in the morning and are later joined by my siblings in the afternoon for a family celebration. My mom usually spends the night with us since we have the kids (this will probably change now that my brother has a little one too) and every year in the past 4 years, hubby's parents also spent the night with us. This always makes for an awesome time on Christmas morning.
Christmas cards are one of my favorite things to get each year. I actually display them all year long to enjoy them as long as I can :). I put them on the door that leads to the garage so that I see those lovely pics everyday.
After the first round of gift opening, we enjoyed some breakfast before going back to open more presents.