A very common venue in places that have draconian closing times of 2 AM. Less common in more tolerant locales, where there is no need for due to liberal closing times, or in some progressive locales, no closing time whatsoever, i.e. Downtown Miami and Las Vegas.

It's a common misconception that the people that go there are universally high as a kite or otherwise incapacitated. Often, people I know will go to a club at a late hour to avoid the general crowd and give time for the screamingly-drunk and the fabulous crowd to come and go.

Afterhours, whether they be like a juice bar, or be in posession of a 24 hour liquor license, are a great idea, as people are more inclined to stay to sober up, and go home safely.