You probably get the shipping number the moment they generate it.
It is put into the system at fedex after pickup as soon as the shipment is at the distribution center of Fedex.
@amanakoinum
That would suck pretty badly....
I flew with a friends Spark and it couldn't even go 300 meters without losing video transmission here in NL.
I have ordered the Mavic Air and definitly hope to get better results .....