You could tell they put a lot of money into it. Two disc jockeys, one at the ground level and one in the basement, played techno music. A crowd bumped on the dance floor downstairs, and some people surrounded the bar. But you could tell by the environment that there were probably drugs there. It was an environment that could be considered 'rave-like' in appearance.
Raves are parties with special lighting and sound effects and are synonymous with drug use.
The second source arrived at the house around midnight with a group of women. But no one did. I was just marked under. They might have checked the girls in front of us. The source is under 21 but had a beer that night.