When you have trouble controlling your bladder, you never know when you're going to feel the sudden, uncontrollable urge to go. You can get to the point where you are scheduling your entire life ...
As a kid, were you ever told to go to the toilet and wee 'just in case'? The 'in case' was to save needing to go while you were in the car, out shopping, at the movies or any other social function.