Great video, AlphaWolf.
Perhaps in reference to one of your statements about the lack of video showing roof access via the access panel, the team going to LA in a few days could go to the 15th floor and see if they can identify the ladders to the access panel and show whether the panels are locked.
It would be great if the people who visit the hotel stayed a night (maybe on a Tuesday?) and checked out the 14th, 15th floors and roof to see what kind of activity there is at that time.