Fanmail.biz

hey i am a football fan ,and i want to send a fan mail and autograph requests to the Barcelona FC soccer team,
What kind of language should i use on the envelopes?

Fan Mail Address:

Barcelona FC
Avinguda Aristides Maillol, s/n
08028 Barcelona
Spain


How could I translate it into Spanish?

I don't know about their reply likelihood but translating it into Spanish try and get someone Spanish or fluent to help you, don't use a translator for long pieces of text, because it'll come out rubbish because they're no good.