Honestly, there's not a whole lot of things for kids to do in this town. While Flip N Out is certainly not perfect, it is a great place for kids to run around and have fun.
Personally, I like this location better than the Las Vegas location. It's less crowded and I like the parent's lounge here in Henderson. Next, there's laser tag, trampolines and even a place to eat onsite. My kids enjoy coming here in the hot summer months as it's too hot to use our trampoline at home. I've noticed some negative reviews about the staffing. Yes, there's mainly young kids working here and they're not always that efficient. However, I feel like they are "just kids" and cut them some slack. If you want five star service --- go to the Bellagio and not a indoor trampoline park. :)
Overall, it's a great place for your kids to run around!