I don't think it's about 'dark' or 'light' themes as such – all Disney dark rides (except Small World) have at least one moment of suspense or peril because it's a basic component of narrative (apart from Villa Volta, none of Efteling's dark rides actually have narrative).It is basically the opposite of the Merlin way of all the dark themes. Can't have all one or all the other without it being a bit off as such?
none of Efteling's dark rides actually have narrative).