There are bad and good dancers there and almost all of it is impromptu, just grooving to the music. You can just go. The glow stick dancers will trip you out, There are usually break dancers there too, but most of the party kids don't like them cause they hog up too much room for just one person to dance. There is hardly any grinding that takes place with partner dancing at most of the mainstream clubs. A a rave everyone dances in their own area and respects everyone else's space.
Parties are good.
Check out a party were you are, search out the underground and see the scene. Entry into a rave is always by cover charge that ranges from 10 to 25 dollars. Late in the evening, if the organisers have covered costs, the cover charge is often waived. For this money ravers expect certain things. Alcohol reduces co-ordination, balance, endurance, and consideration on the dance floor.