Now, that's just personal experience. When I stayed in the tower last month, I did not hear any of that. I was on the 10th floor, dead center on the MK side. We did hear train whistles, but nothing else. However, once we were up, we STILL did not hear any "tower" noise inside our room (i.e. no noise from the concourse, monorail, chef mickey's etc.)
That's why they make earplugs my friend. I don't even TRY to sleep in hotels without them.

Heck, I don't even try to sleep at HOME without them anymore...