There are two of these lounges in LAS. The one at terminal 1 and this at Terminal 3.
At the time of my visit on December 16, there was a popcorn bar, jelly belly jar, trail mix and granola bars. No other food.
Bar - complimentary premium drinks.
Public access restrooms not on premises but nearby around the corner, and airport wi-fi.
I hopped on to this lounge from the Centurion Lounge just a few steps away, on the same floor.
Very nice staff.