My friend had been raving about this place for forever so I had high expectations.
There was no line, but my guy friend did have to pay. They took my reduced price pass for him at least.
I don't know if we went on an off-day or what. It was a Sunday so it shouldn't have been too slow, but it sure seemed like it. The crowd was pretty spread out and not-too-friendly (as Vegas usually is). The place is big but it seemed like a weakness on this day. I would give this a 3.5-4 stars.
My friend still loves it so we'll be going back this summer. I'm hoping for an improvement.