The licencing laws in Scotland allow children into bars that have either a family licence, i.e they have an area seperate from the main bar and they have toilet facilities etc suitable for children, or a food licence where the children can come in for a meal with adults.
As far as the Innes is concerned the licence allows the serving of food monday to friday. Colin doesn't want a food licence at weekends because the bar is usually too busy with football fans. Technically children are not allowed in on a saturday but Colin and Scooby turn a blind eye, pre-match, for most of the games. For the bigger games, i.e Aberdeen, Rangers and Celtic the police stipulate what is required as part of their crowd control plans. They demand doorpersons, no mixed fans and no colours to be displayed in the bars. Colin doesn't allow children on these days because the police could pay a visit to ensure he's abiding by their rules.
Hope that makes the situation clear for all.