With the unbearable Vegas heat, this is an awesome place to take the kids. It's big, clean, well ventilated, with lots of things to keep the kids busy, inexpensive and friendly helpful staff. When we went today, the staff were even going around, distributing cold bottled water for free.
The only thing that I find strange is, they won't let you wear your own socks on the floor. It's either you go barefoot or buy a pair of their $5-6 socks. Other than that, this place is a winner.
Oh and btw, they give military discount too.