It's of a higher standard than others I've been to.
You start at the front. Usually there's a crowd of Asians milling around here. The person behind the counter takes your payment (for the number of hours you're thinking of participating) and you can get your drinks here.
Then they show you into a room that's suited to the number of people you have. Generally we only get a small room as there's only the 2 of us.
The system is quite easy to use and there's a good range of music in many languages. Select what you want and you can preselect a list. There's no waiting inbetween.
Quite fun and you can always go out of the room to get more drinks from the front.

Approximate cost: $avg