It has been over a year since our DQ visit but our DS was only 7 at the time. He is also short (about 50" at that time) and was eliminated from the Toy Story bumper cars, the "Build you own Roller Coaster", and a couple of other things.
Also, the virtual reality headgear was too heavy and he did not see anything. There was also a pinball-type game that you stood on & moved around to rack up points. It was too difficult for him.
He did lots of arcade-type games, but not enough to justify the price of his ticket.
Our DS is now 8 and very bright. Even so, we will not be taking him for at least another year. It seems to be move for early teens and up. He just felt left out too many times.
Hope this helps!