Smoking outside at Alton Towers does not bother me in the slightest - I don't smoke myself, but we're all grown up - walking through, or past, a puff of cigarette smoke is not going to do any lasting damage and the smell is no more unpleasant than other smells you experience all the time. In fact, seeing people doing the theatrical coughing and spluttering when they are in the vicinity of a smoker just makes themselves look stupid!
However, I do not agree with all the dope smoking that goes on - that is illegal and disappointing that it is so widespread. And another antisocial habbit which is just as bad is spitting.
Maybe they should allow cigarette smoking anywhere, and have designated dope smoking and spitting areas??