I'm a fan but haven't been up yet. I'm more inclined to pay the extra 10% and walk up (as it were) on a clear day rather than booking in advance and finding it cloudy. Was it busy today?
For the benefit of those of us who live further afield, could we trouble one of the NSC in-house snappers to pop down and take some shots of the dusk/evening lighting set-up for us to enjoy?