$5.00 is too expensive, I wouldn't play there, they usually charge $2/hour here and $2.50-$3.00 Canadian in peek times.
He is supposed to make the money off of food and such, you just give them the pop, and they get keep drinking it, and have it put on their bill for the end. Charge like $1.50 a can or something, and say no outside food.
Appeal the Koreans and it will do well, it may also draw some fun gang action like the one down the road from my place where some kid got shot. The only lame thing about that is the place shut down after because of all the bad publicity.
Make sure he has hours like 12pm - 4am or something like that, just lock the doors and don't let people in after 12am. Depending on what the city allows.