First off, congrats Jack Skellington Fan on finding out you are having another baby. That's awesome!
As far as our Christmas Eve....
Christmas Eve is just a fun day at our house. We watch Christmas movies, make cookies for Santa (if they aren't already made), play games, hang out, etc. Our evening festivities start with a big dinner. We have our big Christmas *feast* on Christmas Eve rather than Christmas Day because we prefer not to spend so much time in the kitchen on Christmas. Other than a traditional breakfast, we eat leftovers for Christmas Day. Anyway, we have a big dinner on Christmas Eve of ham, sour cream potatoes, homemade rolls, frozen strawberry salad, green bean casserole, sparkling cider, etc. Sometimes we eat it by candlelight (which our kids LOVE), but that hasn't really become a set tradition. After dinner, our kids open one present and it's always Christmas PJs. Sometimes their yearly ornament goes in the same package. They head to the shower/tub and then put on their new PJs and we start the rest of our traditions.
We always have chocolate fondu on Christmas Eve for our dessert. We dip pretzels, bananas, oranges, marshmallows, strawberries, etc. After we have our fondu and get it all cleaned up, we gather around the table to read the Christmas Story from the bible. We sit around the table and we each have a candle (unlit) and then we turn off the lights. We light the candle of our oldest daugher and she chooses a Christmas Carol (about the Savior's birth) that we all sing together. After we sing the carol she picked, she uses her candle to light my candle. I then choose another Christmas carol and we all sing that and then I light my next daughter's candle. We go around the table doing the same thing until we reach my husband's candle. When his is lit, he reads the Christmas story from the bible by candle light and then we close with singing Silent Night and then family prayer. After that, the kids are off to bed. I always have all the gifts wrapped and stocking stuffers separated by person so all we have to do is put things out. Then DH and I relax together, anxiously waiting for morning. (:
The other tradition we have is that Santa brings each child 3 gifts (to represent the gifts the wise men brought to baby Jesus) and each child's gifts are wrapped in a specific paper unique to that child (always has Santas on it). No name tags are used, but a matching piece of paper is put in the appropriate stocking. Stockings are always opened first on Christmas morning. When the kids find their piece of wrapping paper, they can match it up to the gifts under the tree to see what gifts belong to which child.
Traditions are important and my kids would be so sad if things didn't happen the same way every year.