Matters needing attention in going to KTV
You can't bring your own drinks when you go to KTV. KTV relies on these things to make a profit.
Pay attention to your money, and you must pay attention to your bag when you are outside, because you always forget to take your things when you leave, and then new customers come.
Choose a place with good sound quality. When you go to karaoke, you'd better find a place with good comments and good sound quality. The place with poor sound quality is hard to hear after singing.
Don't quarrel with others in KTV, it's very dangerous.