Lucrezia --
You know, the interesting thing is that when one of these bizarre events happens to anyone, more than likely no one believes them. That, of course, is the result of so many frauds out there who make up outlandish stories that could never possibly be true, or they try to pretend that they have special powers to see the future or contact the dead or whatever -- just for money.
So those of us who have actually had odd things happen in life -- even if they are just little things and not big, incredibly scary events -- are probably doubted because those scam artists ruin it for the people who actually experience strange, mysterious phenomena. It helps when someone tells you something -- like your parents and fiance -- and you know you can believe them!
Let me tell you -- if I heard "disembodied humming" as you did when you were a child, and there was no discernible source of the humming, I would be freaked out. That is enough of a scare for me!
I was not thrilled when my TV was turning on all by itself years ago, even after I turned it off. But I could probably tell myself that it must have had something to do with that specific electrical outlet -- just to reason it away.

However, if the fan just suddenly turned itself on like what you described, I think I might even be more freaked out -- but at least it happened in the Summer, when a fan is needed!
Now if I lived anywhere where a massive kitchen appliance like a stove just toppled over on its own, in the middle of the night when no one was watching it, and a table went marching up the steps on its own...I wouldn't be able to get any sleep, for one thing, and then I would be moving out. That is a little too much for me to handle! I was freaked out enough by the odd little things that have happened to me, but that would just be too much. Maybe one could even somehow reason away a stove falling over --
maybe, possibly, if there was a giant earthquake in the night that everyone somehow slept through -- but a table should not be walking up the stairs!
Disneyland was very different in the old days and yet, in many ways, the same. I think you would have loved it then too. I first went there in 1972 (that's the first photographic evidence I have of a trip), and it roped me in even then. There was a certain infectious energy/feeling in the air back then that still exists today -- even when it was just one park and one hotel, and had none of the other trappings, it was still a wondrous place. I am certain that Disney has been pumping something into the air to hypnotize all of us for decades!
What I really miss are some of the old rides that we will never get back, such as Adventures through Inner Space and the Motor Boat Cruise, and the old Disneyland Hotel (which housed the wonderful Monorail Cafe)!
But, by the same token, back in the old days of Disneyland there was no Halloween Time season at all, and the Christmas/holiday season was much 'less' and much smaller than it is today. So I suppose that for every 'loss' at DL, there has been a 'gain' at DL too.