I assume Darrent Williams is in sports, which makes him different for you. But he should have evidentally walked away. I also have an alcoholic brother (dry for over 15 years) who will say it is simply a choice to be in that enviroment. I also drank my fair share in the day. And it does not matter how classy the joint looks, it is still a bar. More money in no way will change that. Alcohol and fighting go hand in hand when you drink enough to become "10' tall and bullet proof" And I know you know the saying. I have seen best friends fire a hand gun over the last can of beer, not more than 2 blocks from a police station, yes he was aiming to hit him also as the other one drove off with the beer. It does not have to make any sense.
My condolences to the family and friends.