The Cantina GM (when I was there a couple years ago) is a complete prick, but it's not a terrible place to get a bite.
The valets at Polaris are not the typical valets. We had eyes in the sky on us at all times, restaurant GMs would tattle if they saw so much as a slightly spirited acceleration.
That said, there was a guy who almost always had hardcore interracial porn on the screens of all his cars. One day he came in his Gallardo Spyder and one of the valets asked if he could turn the volume up all the way (our policy is that once a car is in our hands, we do not touch ANYTHING except absolutely necessary seat adjustments). 2 seconds later a red-faced manager from Brio comes running up to me huffing and puffing about how his entire patio just had to hear "FUCK ME IN THE ASS WITH YOUR GIANT N****R DICK!!!". I told him that changing a customer's radio settings was the same as one of his servers bringing a steak to someone who ordered a vegetarian plate.
Terrible job, but made for some of my most entertaining stories.