She will buy me the retail version, so I have only to install it and update. I have an ADSL connection, up to 7mb (but effective there are 4-5 mb) , it's pretty good, I download 100mb files in a few minutes.
So I think 2 hours I have to wait
Edit : I see that in total there are at least 5GB of update to GT6. Considering the install of the game , and the various update, I think I have to wait 2 hours and half .