The kids version of Unofficial has more touring plans geared to families with children I believe and doesn't include information that doesn't apply (info geared towards single travelers and seniors, etc) When planning our first trip a couple of years ago, I started with Passporters-- loved the colorful pictures and manageable information, then decided to read the Unofficial Guide, and I'm very glad I did! I felt like I was very prepared to make this very expensive family trip worth our money! I then decided to buy the kids version, but I decided that there wasn't a ton of new useful information for me there beyond what I learned in the main Unofficial book.