I am so jealous of you being in the pub watching football! I'm stuck at home studying only advantage is I don't have time to go shopping and there's no food in the house, so at least I can't munch my way through the day!!
I wouldn't worry about it too much. I know that drinks have points the same as food does, but I never seem to be as affected if I go over my points with drinks as I do if I go over with food. Just try to do a bit of exercise to make up for it
... or pee A LOT