Awesome, I had a protein smoothie every morning I was in Las Vegas last week.
No line really, good flavor good size. Only reason I didn't give them 4 or 5 stars is the price is ridiculous. $14 bucks for some protein and vegetables is a little nuts. The second problem is the limited "protein" shake options. Only 1 protein style shake. Would be nice to have 2-3 options.
Def worth a try though vs all the other greasy food in Vegas.