Because one actually has to read, use their mind, think about things. Kids and thrill ride seekers get bored very quickly. I love this place but others in my party were there because it was warm (45 degrees outside in January). The five year old grandson quickly needed a bathroom which solved a lot of the problem. And then he fell asleep in the movie portion.
Myself? I prefer to do this on my own. Then I can take my time. I'll send the others to Lights, Motors, Action (which ain't my thing) and do this.