Sounds like you were in "FROG'S", James. Major UNLV hangout once.
I got friends who love to fight and I send them to a biker's place called Hogs and Heifers downtown because other biker buds love to do the same, but I've yet to see or hear about a fight down there yet.
But one of the better battles did occur in Tao (supposedly one of the finest night clubs in Las Vegas). That one was a three punch battle with two of those punches hitting the wrong guy.
He took the first punch from a smaller guy directly in front of him and while he was thinking about hitting a "smaller guy", he took a second punch from the smaller guy's bud directly to his left side and since this second guy was much larger; he let go with a direct hit to the guy's face and blood and snot flew everywhere while the guy was flying a few feet over the dance-floor on his way to the deck.
My friend just happened to be somewhat "indestructable" when it came to taking punches and that second guy just hit the wrong guy at the wrong time.
Needless to say, my friend and his entire party (they were celebrating his sister's 21st birthday) were escorted to the front door while the guy who landed on the floor was escorted to a waiting ambulance.