Well, I took my daughter to see it last night and we both thoroughly enjoyed it!
The music was wonderful, the singing excellent (particularly Ricky Wilson as the Artillery Man and Will Stapleton as the Voice of Humanity singing Thunderchild, Jason Donovan played a very convincing Parson Nathanuel) and the special effects first class.
My daughter said it was "amazing" and I am now thinking about taking my son in a few years time when he is a bit older.
The only slight disappointment was Marti Pellow, his voice just did not cut the mustard and I did not like his version of "Forever Autumn". Oh well.