It was similar for me turned up one hour early but had to wait to 5.10pmMy appointment was at 10am but arrived at 9.00am (I did a one way car rental from the East Midlands and it way quicker than I anticipated). At the first check-in downstairs they said I could do the 9.30am but when I went upstairs to so the second check-in (signing for the car), the sticker they gave me was for 10.00am (doh!)
When they called the 10am, you go downstairs into a basement area with lots of Telsas on display. I had to wait a painful 10 minutes in the area (music, flashing LED lights etc) then you go into the presentation area, were they push their 'mission statements' (I just wanted the car!!!) 10 minutes later (felt like 30!), they announced 10 at a time could go through to the next section and get their cars so you saw 50+ people then dashing to form a que!
It was now 10.30am. The next section is people with laptops doing some final checks then you are send outside were there is a bunch of guys rifling through a cardboard box with lots of key envelopes in no order whatsoever (you couldn't make it up, it was chaos!) If you want to skip the marketing tour, then you can't. It's like having to doing the room set route at Ikea to get to the tills!
Got in my car (90% charged!!!! - I was going back to the East Midlands so that was an utter stroke!) I'd say I drove away at 11.00am. Hope that helps.
5.50 went to pick up key card and they could not find it went to car where one of the helpers was with the cards after inspection of the outside got in and then cooked my bum while I figured out how to turn off the heated seat which left me with 31% battery dooh!