Fire was in November 69, this was "Out of Season" for the fairground but the building was in full flow (the Manager and his team locked up as normal that night) As it was out of season, most of the rides were in storage (or in the case of ones privately owned had been returned to the owners winter quarters). The boating lake was emptied every winter (this was detrimental at the time of the fire as the fire brigade could have used the water to help fight the fire when they first arrived).
Access to the building at the time was extremely easy and believe me it wasn't locked up and secured, especially the doorway to the side by the lake. The lake was emptied some times but not as a matter of course each winter. I worked on it, I know. We sometimes walked on the ice when it was frozen over. If you look at the photographs of the building as they are demolishing it, the lake looks in a very sorry state and I don't think it was going to reopen at all. I am trying to remember but can't say exactly but we made a five aside football pitch in the empty lake knowing full well that it was not going to be used again. I think but am not certain that the tower building was still standing?
I've never heard of any ride in the Tower going into winter quarters. They stayed where they where with possibly the old wall of death going on tour usually to South Africa for the winter but that had long gone by the time of the fire anyway. True some would be covered up or partially dismantled usually for maintenance but I don't ever remember them being taken away and brought back. I will bow to anyones greater knowledge if wrong?
I can not remember anything working once the tower building was demolished but that is not to say that some things might have kept going on the lower level?
As a little aside, when the lake was emptied, poor old Mr Bedson in the tower lodge used to get flooded out.