My boys ages 7 and 9 have spent a total of 12 hours over two weekends here. One lives for skateboarding and one loves the gymnastics section. The staff play games with them throughout the session. That being said, the staff is not there to be babysitters, but they are around with a watchful eye.
My one and only concern about this place is a lack of front door security. Nothing stops the kids from coming and going from the facility or someone from coming in and taking the kids away from the facility. The doors are very much open to the general public. This is only slightly troublesome and obviously doesn't keep us from dropping them off there. But it would be cool to see something implemented to keep both of those things from happening!