There are other threads here that address this issue, so you should check them out. Make sure you get the charger box and the TWO (L1 and L2) removable connector cables, as well as the "set screw" and small wrench.
Just a good check over the car for any damage that all charging cables are present and register the Etron charging card and supply Audi concierge with your details for the £150 voucher. Check for missing spec I know they have run out of wireless phone chargers and some cars arrive without and make sure dealer has applied a note for a second key when they are more chips available. I would also ask dealer to setup key user on the myAudi app as it’s a pain to create yourself. One last thing the steering wheel check it’s centred mine is off and it’s a month wait till I can get it in the dealers