When most people think of film premieres, they think of huge galas with celebrities in thousand dollar dresses, gigantic warehouse spaces filled lavish sets where guests can re-enact movie themes or perhaps a hundred storm troopers standing guard as two cloaked man duel with lightsabers. On the flip side are the personal premieres - movies without real distribution, where the filmmaker and crew slap together enough money to get a table at the back of a bar or club where they can drink with their friends and make a special night of it.
The indie world premiere tends to fall somewhere between the two - often with red carpets, rented buildings and free food (sans decadent spending), but inside filled with a community of people who tend to know each other and on the most part are friendly. They also tend to take place in the type of clubs that many in attendance wouldn't be caught dead in on any other night of the week. I don't know if it's a desire to sample these places under controlled conditions or to sezie upon the glamour of the place and somehow attach it to the film in question or just make the night a little more special, but I've always thought these clubs, no matter how hip, trendy or cool are all more-or-less the same (and that's not to say i don't enjoy them), and the best parties are always those that somehow tie the theme of the film into the location, anf break away from the repetition of the usual- whether that's a club, theater or warehouse.