I would expect the day to go like this:
(1) Be incredibly nervous that it'll have horrible defects and I'll have to reject it
(2) Find it's OK
(3) Having stomach wrench as I hand over a large chunk of money* (happens with every car).
I might possible
(3) Possibly cry tears of joy*
(4) Briefly ponder the fact that this might be the last car I buy.
(5) Drive home (with 1 Supercharger stop).
(6) Enjoy the significant increase*** in electric driving and reduction in gasoline consumption
It wouldn't be anticlimactic for me because our Volt is my wife's commuter, so I currently don't get to drive electric as much as she does. My commute just gives me some engine off time in my Prius.
Of course, this is all assuming that I end up with a Model 3. There's always the possibility that it doesn't meet my requirements and I end up with a Bolt or Gen 2 Leaf.
* happens with every car I've bought
** It wouldn't be because _I_ have the car, but because I _have_ the car, which would really solidify internalize that fact that I and so many others have a car that's Tesla's raison d'etre, and part of the generation of vehicles that establishes the electric vehicle market as self-sustaining. Because I think that the ultimate benefits of electrification of transportation could be mind-boggling huge so simply being a self-sustaining market would be a huge positive step.
*** We have a Volt and a Prius. Volt is 50-odd % electric.
Agree with most of your comments:
1) Cry tears of joy! No more pouring 20 lbs of CO2 into the atmosphere for every gallon of gas I burn in a car!!!!!!!
2) After owning 36 vehicles, knowing this is the last car I will ever own.
3) If picking up in Fremont, spend time in San Fran to celebrate and then drive home to Phoenix
4) Show the car to every member of the family in Phoenix...they've been waiting as long as I have
5) Start the road trips to San Diego, Portland, Wisconsin, and Virginia to visit family and let them try out the car
6) After a year, take a road trip to D.C., New York, and Boston.