I think Colin got on this ride because he didn't see what it did. The ride spun, and then went up and down a big ramp. Neither boy was interested in a 2nd ride.
On our last day in Vegas, we went to the AdventureDome at Circus Circus. We got each boy a wristband so they could ride any ride. Nate wanted to ride the roller coaster, but Colin wouldn't get on when he saw that it had 2 loops. Nate still wanted to ride - so he went on by himself. THREE TIMES! He loved it, and probably would've ridden a few more times if other rides hadn't beckoned.