It did seem to be a terrible day in general. I personally would never even dream of going to a theme park on a weekend in this heat with today also being Fathers Day. That in itself is a recipe for disappointment and it looks like Alton Towers got a bombardment of negative feedback.
I've come to expect it now from the rides at towers, they are by far some of the most unreliable in the country. But I have a MAP so don't let it bog my day down too much if I can't get on something but know some people only ever make a few trips if that a year. I'm only ever surprised when Nemesis is unavailable as she is just a beast