They should leave whatever they are doing to play that game; you can't tell if that's going to be the right game that will change their life or not, and if you don't gamble at that time, you have to urge that you might miss the fun of gambling even if it takes the person to suspend whatever they are doing at that point in time.
Gambling requires enough time ready before a gambler can think properly on his moves and the right techniques to implement in his gambling game. However, some people get carried away or deceived that a specific time could be the better moment of gambling to increase their chances of winning. This false admittance will only affect the genuinety of the current work or task the player is currently working on. Gambling is not meant to be rushed. It's a simple game that's supposed to be calculated and the right choices made to avoid confusions or disputes on the long run.
I don't think gamblers should derive joy by gambling in a way that doesn't promote responsible gambling. This will only affect their finance on the long run. And put the player on a stage where he could continually wager money like this till a bitter moment of losses and financial break down. I admit the notion that gamblers should always wager when they have enough time to play. Unless the player is always busy with work and only has few moments to gamble in a day, it's always great for a player to observe his moves by offering enough time to it.