I would say Tesla's delivery definitely not the best, especially compared to traditional car manufacturers' dealership experience. I was 20 minutes earlier and they also allowed me to register earlier, however, the briefing session was full right before me, hence I have to wait at the waiting area for roughly 25-30 minutes before gets called into the next briefing session (P/S the coffee machine isn't even working!). The briefing is kind of extra for my case as I'm already quite 'familiar' with all the features and functions of the car before I even ordered the car (I believe most of us here are). After the video briefing, then we were brought to the delivery car park and the staff just asked us go and locate our own car
As my car is the furthest away from the building entrance, I was the last one to be entertained by the staff. Before that, I just go through the car inspections, feature testing, photo taking, even have to grab the big red ribbon ourselves for photo sessions. After about 20 minutes of inspection, walk around and testing, finally the staff approached and only guided me to confirm the car VIN number, then helped me to setup the phone key, then requested me to sign off the delivery then that's it. Told me I can just drove off.
Same with everyone here, luckily I'm already pretty familiar with the car, so I indeed not needing too much assistance from the staff. But there is almost little to none of the "welcomed" or "prestiged" feeling for the whole Tesla delivery process. You're just like a student go to attend a class, then given few instructions then that's it. Car is flawless tho, as per heard online, Shanghai Gigafactory's build quality is indeed above par.