Let me just say this.
Beware of taking advice from others "too" much. Many who like the ride refuse to acknowledge the problems others may have. I LOVE this ride, but I will tell you that some many really have problems with this.
Even if you love rollercoasters you can have issues with this.
This ride is intense. Dont let anyone convince you otherwise.
If you have a child you are not sure about, I urge you to ride by yourself first then make a decision.
The ride does have g's. Though many will tell you that they are no more than a rollercoaster, the big difference is they last much longer. At some points some people even have noticed the G's causing them to slightly lose their breath and they have to breathe harder to catch their breath.
Also if you are chlaustrophobic, forget about this attraction.