Yes I was aware of that news. Robbers also frequent casino and they look for someone who won big and if yo are not locals, then you are a likely target. One way to prevent that it is to go and check-in the hotels just to be safe and just go home when you think that you are not being followed. What is just a day of relaxing and treating yourself like a King for a day, well at least that's what my fellow gamblers do when they won big.
Absolutely, the perfect excuse and really the casino should be comping a room for winners anyway. It'd could be standard practise to encourage players to stick around and play some more rather then go home immediately.
Always mix up factors to be less predictable if possible. I mean thats a ton of cash to be carrying around, I would be so paranoid at that point.
I dont immediately assume the building employees are suspect certainly anyone long term has an interest not giving their business a bad reputation but anyone in the surrounding taxi or hospitality staff could observe as much anyway. I have worked in places where staff were not on the level, its not always the obvious choice thats behind something like this but they'll always go after the easiest target.
For example I would phone for my own taxi that I use regularly etc