I'm not sure why people want to compare this place to In & Out, And when they do, I'm not sure why the Shake Shack doesn't ALWAYS win the comparison.
The line was long, but the wait was short. The service was great! The burger was seasoned well and very tasty. The bun was even better than the burger. The fries were tasty. The vanilla shake was DELICIOUS!
There is one HUGE negative about this place. It is definitely an inconvenience for us locals just to get a burger and a shake. I went there because I was doing a Staycation on the strip. I can't think of a time that I will drive to the strip, park, walk through a casino...all to get an EXPENSIVE (yet good) hamburger. It just won't happen. And just so that you know...I won't be going to In & Out either...yuk....