Remember that you need to check that ALL ingredients on any processed foods are allowed for whichever phase of Atkins you arre at.
As far as I know NONE of the selfstyled 'lowcarb' bars only contain induction-legal ingredients so they should be left till you are on the level/rung of OWL that allows all the ingredients, no matter which phase of Atkins the label says it is OK for.
Another thing to take into account after drinking alcohol is that the ketosticks register the acetones given off when your body uses alcohol as a fuel as being the same as ketones, so you might see a false positive till they are all used up.