At the studio I took lessons I pretty much knew and talked to everyone. Of course not in same depth with everyone but I am one of those social people who make a point of having spoken to everyone at some point during the evening.

Now that I am not taking lessons anywhere I just talk to handful of people and leave once I had my fix.
At the moment I am not interested in getting to know anyone, I go to dance with a couple of friends and perhaps the odd stranger but thats that.