So they finished the car around 11:30am and texted me to pick it up at 1:10. I had an SR as a loaner (not an SR+). I was impressed by the power on it, wasn't bad at all. It had a lot of creaks though even though it was a 328,xxx VIN. My 'early' VIN was a lot quieter in comparison.
I was lucky and my car retained all settings after the upgrade. The only thing I lost was my Bluetooth pairing with my phone for media purposes. The backup camera is definitely darker compared to HW2.5. So that is a regression that hopefully will be fixed in the future. I got upgraded to 2020.12.1 from 2020.8.1. There is a maps update probably running right now.
The cameras calibrated about 12kms into my drive home. Had one instance of phantom braking approaching an overhead highway sign which was weird. Visualizations are nice. Keep in mind it looks like they need to disconnect the HV battery so any car seats on the rear seat will be removed.
All things considered, it was a pleasant experience. Ohh, they washed my car! Grrrr, I thought they didn't do that anymore otherwise I would have asked them not to. Nice gesture for most but the last time they did it they left some swirls. I didn't get a chance to inspect to see if any surprises were left this time around.