Three hours before thru three hours after liquor is allowed to be served in your locale. This wouldn't apply where liquor is sold 24/7 but would generally mean between 10pm and 4am. Even where you can get drinks at any time these are the times when most recreational players are playing and drinking. This is my personal experience, of course, but I've spent a lot of hours in b&m's and the games are best during these hours, at least for me.