Yes, they were probably just making small talk or so used to asking that question it is just a habit. At 13, that should be fairly obvious that he is over 7. They asked my kids their ages too at that attraction. My kids are 9 5, and 2. When my 5 year old said 5, the CM said make sure she rides with an adult. I guess they just assumed we wouldn't put my 2 year old on without an adult because she didn't specifically state he had to ride with an adult.