My wife and I were visiting Vegas with our 6 and 3 year old daughters and they loved the AdventureDome. Sure, Circus Circus is not exactly the most upscale destination in Vegas, and sure also that $60 per ticket is too much, BUT if you have young kids (but not so young that they're not at least 36 inches tall), this will be a Vegas highlight for them. First, it's all indoors (except for the Go Karts), and when it's 110 degrees out that's very important. Second, lines are short, so they can ride a lot of rides. Third, Canyon Blaster is a real roller coaster with 2 loops, and a pretty long track considering it's indoors. El Loco is also sort of a roller coaster but too short. Most of the other rides are things that go fast in circles but are generally of higher quality than carnival rides. Of course this is no six flags or Disney, but your kids can spend several solid hours here and love it, and you will not be baking in the hot Vegas sun, which is a win.