Best stay away from places where there is drinking and many young, egotistical males.
Was a doorman/bouncer off and on for over 20 years. Seen it all. Visiting these types of places is always a risk.
Always think defensively and never as an instigator.
There are War Machines everywhere, off kilter in the head and just looking to start shit, with someone. (I've fought War Machines. They're not well in the noggin' and dangerous, to say the least.) Whether an encounter is a win or a lose, why even bother if you can avoid it?
BUT ... If a physical altercation does happen (after an attempt to avoid it), don't "fight", but rather "seriously injure/kill".