In 2004, I traveled to Denmark, England and Ireland with my sister, mother and grandmother to visit various relatives on both sides of the family. I envisioned it as a way of reconnecting with our European family and discovering our Danish roots — 3-1/2 weeks of hanging out, catching up and having lots of fun. It wasn’t. Instead, what I hadn’t realized was this: Now that I am an adult, this no longer qualified as a family vacation, because a family vacation is not really a vacation unless you are under the age of 18. Consider using the following tips and reminders for your next family vacation — they just…