I had a so-so experience at the Denver Tesla Service Center.
They didn't do anything with regard to the brake vacuum pump sound; said it was normal. I cringe every time I hear it now. The car simply didn't make this loud sound back in 2013-2014. I wish I'd remembered to demand they walk the entire service center lot, and open any half-dozen of the 100+ Teslas there on the lot, and press the brake pedal and prove that loud sound is ubiquitous but I didn't think of it until today.
They had the car for a week; an hour before I arrived, while I was en-route from 10-hour drive from Omaha in the rental car, I got a call saying car was done, washed, ready. I get there, no car; 15 mins later, car arrives, soaking wet, soapy, streaked, smudged, dry spots where sun had instantly dried the water droplets, etc. I open the rear liftgate and blam, a waterfall of soapy water falls down and splatters all over the carpet in rear of car. And this, I was told, was a car that had "passed" what they call "QC" (as in "quality control"). Repeatedly during the week when they (very kindly, I might add, no complaints) called to give me updates, the odd message was the obsession with this "QC" thing, and that all bets were off if my car "failed QC" in terms of getting it on time. I've never heard of "QC" ever in 3 years of dealing with service centers all over the place many dozens of times.
I'd asked the rep to please charge the car to 90% the morning before I was arriving after the long week. He said sure no prob. He didn't charge the car.
Long long list of little things like that, which I can summarize in one word: Denver.
I seriously doubt I'm going to take the car back there. I'd kinda rather drive 9 hours to Scottsdale AZ before I go back to Denver.