You were living in time where vampires were something... Let's say like regular to live among people. Of course there were always people that rathered to avoid them.
Some didn't interact with them because they didn't like them as beings or their personalities, others because they were scared overall.
Even though there was a law that said a vampire couldn't feed of a person without their consent and everything was supposed to be fine.
On a weekend night almost everyone was somewhere out and most in clubs. They were not restricted for vampires either. If you didn't wanna meet them you could just stay home.
"Where's Lucius?" a vampire sitting in one of the VIP booths asks as he doesn't see him coming with the others.
"He didn't feed before we left, so he's getting a bite somewhere on the dance floor" other answers.