Kids of all ages love the kids' menu. I remember my cousin's bat mitzvah party 10 years ago where there were two cocktail hours. One for the adults with a quartet and fancy hors d'oeuvres (crab cakes, mini lamb chops, cheese bar - it wasn't kosher) and the kid cocktail hour with a DJ and kid-friendly hors d'oeuvres (pigs in a blanket, sliders and mac n cheese).
I remember that a lot of the adults were in the kids room and my aunt was annoyed because she was spending all this money on fancy food and all everyone wanted was kid-friendly fare.
You may want to consider adding some childhood favorites to your wedding's cocktail hour because it really is food that everyone will enjoy. And if you and your fiance are fans of something specific don't be afraid to add it to the menu.
You know I love pigs in a blanket but there are a lot of other fun finger foods that you can serve: sliders, fries, mac n cheese, chicken fingers and mini-pizzas are just a few ideas. Talk to your caterer about different menu options and ask your parents and close friends what their favorite cocktail hour foods are too.