Originally Posted by JS
As far as I know, no such FAA regulation exists. Like others here, I have also ridden in a hotel shuttle with airline crew.
However, I wouldn't be surprised if the airline crew commandeered the shuttle for their own use (not literally, but demanding that they be served separately).
One time I waited for a scheduled hotel shuttle early in the morning, and I found out that some airline crew showed up 15 minutes early and demanded to leave NOW. Why, they just couldn't be bothered with the posted schedule (the one that says "5:00 AM") that the rest of us live by.
I was very mad that the hotel let them do this, and I swore I would never stay there again, and I've kept my promise. I suggest you do the same.

Then to top it off, the next morning, getting a Sunport ride on one of their taxis, which is also paid by the hotel, the driver tried to charge me for the ride. I told him that it was the responsibility of the hotel to pay for my ride. I think he was just trying to make a few extra bucks off someone unaware of the situation, but it didn't work with me.