So far, our story is this:
March 2016: waited in line in person and put down two deposits on Model 3s
Early November 2018: frustrated with slow delivery of base Model 3 (still not available), considered getting mid-range Model 3. Compared everything and settled on buying used Model S instead. Started the search and found one we wanted.
November 10, 2018: Put $2500 down on Silver Model S 70D for sale in CA. AWD, Sunroof, Slipstream Wheels, Grey Next Gen Seats, Piano Black Décor, White Alcantara Headliner, Free Supercharging, AP1, Ultra High Fidelity Sound listed for $50,800 plus taxes and fees. In CA the taxes will be about $4k.
In the next few days we did the thing necessary to be ready - secured a loan, set up our insurance, send Tesla our documents, read the quick start guide and skimmed the manual, joined local Telsa owner's group, booked flights out to pick up the car, arranged babysitting for our son while we're gone for the day (drive home is about 6-7 hours), in process of removing garage cabinets to fit the car, will install charger after we take delivery.
November 20, 2018: Date that we're scheduled to complete the sale and take delivery. I will follow up with more info about how it went after the fact.
We have not canceled our Model 3 reservations yet, but plan to do that as soon as we get the MS. We still might get a Model 3 in the future, but there's no longer a need for the reservation since a) we'll be MS owners and move straight to the front of the line if there's a line and b) they never really seemed to honor the reservation line anyway, which is one of the reasons we got frustrated and c) we will probably just buy a used Model 3 if we want one since that will likely be a better value.