Interesting -- I'll look into that for NYC. I'm CTO at a startup based in Toronto, but we have a tiny space in Manhattan so it's pretty easy for me to schedule some business there and have my family tag along.
I've certainly never heard of hotel taxes only being for tourists in NYC. NYC is worse than most with all the taxes and fees they add. The worst was that for a number of years they had some Javits convention center enhancement fee. This was during a period when it wasn't even clear if the project was going ahead--though it eventually did.