I went here for my birthday and we reserved the MVP room (up to 30 people).
The staff here are so chill. If you know what you're doing, this place can be hands down the cheapest and most fun you can have in a 2-3 hour window.
First: This place is BYOB. So you're welcome to bring in your own alcohol. So I would recommend (depending on your group size) bringing a couple coolers of alcohol.
Second: make sure you don't forget your plastic cups or whatever you're using to make drinks. Don't forget whatever snacks you may want to snack on while singing.
Third: If you're doing a large group like mine, I would bring some towels like we did. Someone will inevitably spill or knock over a drink. They will charge a cleaning fee if you don't make sure the room is semi clean.
Lastly: They have multiple mics in the MVP room so many people can sing at once. They have a projector screen so you can see the video/lyrics. You can adjust the sound inside the room to perfectly tune it to how you want your voice projected.
The reason for the one missing star is because of the Song Catalog. I feel like it's lacking some of the more classic American songs, and they have a huge catalog of korean/chinese type songs. And because of the huge catalog of Asian songs, it makes it a little difficult to sift through to find the American/English songs. They do have an app you can download that will sync up with your room and you can queue songs that way. Very helpful.
We rented the room for approx 2 hours on a Saturday night (9-11pm) but then extended it for an extra hour until midnight. There is a music licensing fee that's also added on so the final total came to be about $480. That's for 3 hours of entertainment and unlimited alcohol (that everyone brought) for 25 people. So approx $20 per person. What a deal!