This has been discussed in other threads previously. To summarize for you and others, here is what I know. Perhaps I am wrong with some portion of this, you get what you pay for in free advice. This is based on my experience.
1. Arrive on-time, not too early. Time slots are for many reasons, so try to honor them and not arrive too early unless perhaps you are first one for the day? Social distancing, crowded parking lots, and the ability for the staff there to handle any customer contact are some of the reasons why there are time slots to honor, to space them out.
2. Bring your smartphone and make sure it can access via cellular your Tesla account page AND it has the Tesla app loaded and you are able to sign into the app. The app will not show you much at this point, but you must to be able to sign into it.
3. Find your MY and verify it is yours via the VIN
4. Inspect the outside. If you are going to be that guy who brings a set of calipers and a magnifying glass to inspect every mm then do it quickly. You will be in the way after your time slot expires. You should be allocated 30 minutes (I was) to do complete delivery, no reason why the outside could not be done in 10 minutes or less. Document any issues on outside like paint chips, dents, scrapes, etc. - important to do this before you leave the lot.
5. If no reason to reject based on exterior inspection, no major issues, then you can try to inspect inside but it will be most likely locked. Look through the windows for anything wrong, seats okay, nothing obviously broken, etc. If it is locked, put on your mask and go see advisor inside to submit any outstanding docs and payment, that will let you do accept delivery in your account. You are not going to access the inside without accepting delivery. For people who pay in advance of arriving, there will be an envelope inside with the RFID key cards and paper work to sign, should be completely touchless experience. If you are bring payment, not sure if they do the same thing or you get those inside.
6. After all conditions have been met and payment made, you should be to accept delivery in your account web page. After doing that, give it a few minutes and make sure you car shows up in your account and in your app. You may need to sign out of app and back in again for it to appear. Closing the app and starting again is not the same, you need to sign out.
7. Once your app has your MY in it, you can use the app to open the doors.
8. Inspect the inside and complete your checkout. Again, try to complete before you time slot expires. At this point, anything major issues should have been seen already, and now you are only going to find the small stuff which should be fixable and not deal breakers. No need to use a microscope at this stage, you have up to 72 hours and less than 100 miles on the odometer after delivery to report any issues. So only look for the big stuff right now. If your drive home is less than 100 miles, wait until you get home and then take all the time you want to inspect. Just remember the time and mileage limit cut offs to report.
9. Now decide, still going ahead or not? You've already accepted delivery, chances are not too much can be wrong inside to negate that, you should have seen most of inside from the outside if something bad like seat damage or touchscreen glass was present. Access the envelope, remove the RFID cards, sign the papers with the pen you brought or the pen they give you, place the envelope with all signed papers in the box usually by the entrance, all depends. Make sure to hold on to the RFID key cards.
10. Done, you can now drive away or try to get somebody there to look at your issues while you are there. Sometimes you can get somebody there to do it now, depends on your location, or you may need to submit them via service ticket in the app.
11. When you get home, take your time to look it over and create a list of any issues to fix. Do not expect mm adjustments for everything to be perfectly aligned and spaced. Make sure to notify within the window allotted. Once you drive off the lot, some things if not already noted may not get addressed, like dings, scrapes and damage to the rims. Those things could happen after you left the lot, so make sure to identify those before you leave. Other stuff like the adjustment of a taillight can happen later on.
Good luck with it. And do not expect the fit and finish of a high end luxury or super car. If you are going to be hung up on those little things, then my suggestion is to walk away now. I got lucky with my MY, good QC, none of the crazy issues like others have reported. Remember, we do not have a statistically accurate sampling to know what percentage of deliveries have QC issues. It is like looking on Amazon web page for reviews. Not every satisfied customer will submit a review, there will be some positive, but those with negative experiences will be more likely to post, skewing the actual stats. Yes, I identified some minor things with my MY, but they got sorted. But I am not going to take a magnifying glass to every square inch and use a set of calipers to measure every panel alignment/gap expecting mm perfection. I inspected by eye from a distance and up close and made a judgement call, was it good enough for me? Ultimately that is all that matters, is it good enough for you. If you are going to get hung up on those level of details, not sure Tesla is the best fit for you.
