They use to be in Palms, but I guess since the Playmates were there it wasn't a good influence for the kids! Nevertheless the drive to Red Rock to have a babysitting service is still worth it! My wife and I have been going to Kids Quest for almost 6 years now and my boys enjoy their stay there. Every time we're in Vegas (once or twice a month) my boys will always want go to Kids Quest so my wife and I can have our time to play and have fun.
The rates are great about $9 an hour per kid, worth the money if you're winning too, hahaha! This particular location has an iPad and a basketball court. And, they provide food and drink if you give them an allowance during their stay.
Highly recommend for parents looking to have a few hours or 4 without the kids while in Vegas.