You can register with the FAA without the serial, they do not collect that. The registration covers any drones that you own or purchase until it expires.Yes I know to register with the FAA but assume I need to wait before I get the drone for a serial number? Good call on the manual..will download that and read it at work tonight. I have flown my brothers P3 Advanced a few times so I know a little of what to expect. Does anyone have the charging cradle from DJi for 99?