"Just stay where i can see you/ douse the lights" refers to the stage lights. When you are on stage (whether it is for music, theatre, or runway, whatever) you cant see shit if the spotlights are on because they shine right in your eyes. By dousing the lights the audience and the person on stage can mutually see each other. Once the lights are doused "we sure are in for a show tonight" is a sarcastic comment on what you are finally able to see when the spotlights and pretenses are turned off: the sweaty fanatical scene kids. He's more or less laughing at the audience and the state of the scene, if you will.
"Just stay where i can see you/ douse the lights" refers to the stage lights. When you are on stage (whether it is for music, theatre, or runway, whatever) you cant see shit if the spotlights are on because they shine right in your eyes. By dousing the lights the audience and the person on stage can mutually see each other. Once the lights are doused "we sure are in for a show tonight" is a sarcastic comment on what you are finally able to see when the spotlights and pretenses are turned off: the sweaty fanatical scene kids. He's more or less laughing at the audience and the state of the scene, if you will.