We were there for over 4 hours and we all wanted to come back the next night.
This place was so amazing! It was awesomely priced ($17 per hour for a small room), there was a HUGE song selection, the booze was reasonably priced and the service was unbeatable. After 2 hours they comped us a bottle of sake and after 4 they brought us a free plate of fries.
If you go, I recommend the Yogurt Soju, we ended up getting 3 orders of the stuff, it so was fantastic!