Done it many times! It's the best kept Covid test secret... super fast, easy, and we've (so far) rarely run into any sort of line.
We have parking on our pass already, so that's not an issue... I suspect if you didn't, you may possibly have to pay for parking. It's located inside the ground level of Jurassic Parking, just under the Valet level and the food court. Take those food court/parking garage escalators or elevators to the ground floor, and turn left.
They make you fill out a form online with all your info. Once entered, it will give you a QR code that will be scanned with your test. You actually take two tests... one is a rapid test (where we literally got a result in about a minute), and a PCR test that they'll email you the final result a few days later.