GTA VCodes used : Yes. There was only one code for unlocking "atomic blimp" (a vehicle). There is no effect of the code on multi player.
Accessories : Everything that came with the package. eg: Map (as seen in the background picture) is included.
I still have the invoice if you need it I can send it to you.
Payment includes shipping charge. In case if you are a local the shipping charge (included) will get slightly reduced. Moreover you may get the product with in a day or max 2 days.
I will ship the product with good packaging.
However I won't be responsible for any shipping damages (If done from couriers side).