I was fortunate enough to have my company send me to the 2015 Zend Conference in Vegas.
I went with a few of my coworkers and in addition to learning a ton at the conference, we made the best of our time in Vegas.
My friend and coworker, Abel, and I saw several different Vegas shows. My favorite (besides the mentalist that was hired by Zend) was La Reve - an absolutely awe-inspiring water-themed Cirque du Soleil-esque show (only so much better than any of the Cirque du Soleil).