I had the exact t same issue. I'm traveling and asked them to extend the pickup date from this Friday to Monday, and was told no. They gave me two options 1: Place my account on a 14 day hold. You then lose the assigned car. Then wait a few days and take the hold off. Supposedly you don't lose your spot in the queue and will get another VIN/Delivery date soon. 2: Add an option to the car. I added the tow hitch. This doesn't put your account on hold, you lose the first VIN since that car doesn't meet your order, and should get a new VIN in a few days. I did this Tuesday so I'll let you know when I get a new VIN. I really don't get why they wouldn't hold the car for the weekend for me, but sometime Tesla doesn't make sense. That said I love my Model Y and willing to put up with these "speed bumps" to upgrade. FYI, FSD doesn't slow down for "speed bump"