On my 2019 Model S 75D I have a install for HW3 this Thursday, the first 2 appointments they cancelled saying they didn't see a work order but then just today they said it was available. I paid for FSD last Thursday, so a pretty quick turnaround. However I am little nervous now hearing the calibration issues some of you have had.
They did my 2018 Model 3 a few months back - totally seamless (only a few issues like having to re-do my phone connections) but no calibration or other issues. They did keep it overnight though.