Japan Style Karaoke? in a room?

The way Karaoke is done in Japan is very different than in many other countries.

You first rent a room which is fully equiped with microphones, and the whole Karaoke set.
You will find a large selection of songs in English, Japanese, and many other languages of course.
The rooms have a large round table and seats surrounding it. Karaoke is done with your own group enclosed in that room, not everyone in a bar like many of us may be used to.
The top-right photo may look like a bar but it actually is a VIP Karaoke room, you can only go in with your group and pay a flat fee, depending on how many people can fit in that room. This was 500 yen per person.
Alcohol may be ordered and the waiter or waitress will bring it to your room.
The other three photos are regular size Karaoke rooms, less people will fit in this one and you have to go get your drink yourself. No room service!!
That night I didn't stay because it was already midnight and I was pretty tired, but it seemed people really have a good time since you will be surrounded by just your friends and no extrangers.
Note: People like to smoke too much inside this enclosed rooms and I couldn't stand the cigarrete smell. ---Like you may know every where in Japan there are smokers, and it is hard for me to get used to it. I don't know what I am going to do if I plan to experience the whole thing. ahh????