That sounds like the thoughts some people have when they want to go to Gamestop or ToysRus to claim their rare Pokemon! I just figure it's less competition as I can overpower little kids with ease and get my Pokemanz first!
However... there was nothing but college students! OH NOES!
I remember this when it came to Kids' Fest at Dollywood last summer. We intentionally planned a trip to Tennessee so we could go see this. (thank you park season passes)
As a heads up, the one we saw was about an hour long (because of the many shows Dollywood had daily I think) but the one you'll probably see will be closer to two hours. (wanted to go to the one in our State capital, but we couldn't find a touring schedule)
If I remember right, there were more adults than kids in the audience for Star Trek Live the last two days it was at Dollywood, but it's geared towards a younger audience and is educational. Like what Revo said, it's family oriented.
Regardless of that, I'd reccomend going to this regardless of age.
I won't say anything more 'cause I don't want to spoil the fun.