"You don't need one for channel 5"
True, but then your reception of the free to air non sky card version of five totally depends where you are in Spain. The free to air version of five (on frequency 10773 h 22 5/6) is on a very weaka satellite frequency, and in many east coast areas of Spain is not available 24/7 even on 3.1m dishes!
The sky card version of Five (on freq 12442 h 27.5 2/3) is available 24/7 in most areas of Spain on 80cm dishes, I even get it on an old Sky minidish!
So to say thatyou dont need a card for canenl five is true, but it really does depend on oyur location and dish size!
no, you just get extra freesat channels without a sky subscription
You dont need a card for "freesat" channels, as "freesat" channels are free to air. All free to air chanenls are available already on freesat and sky and generic free to air receivers already.
There is no such thing as a "freesat" card.
There is, which is mentioned here, the "freesatfromsky" card, that allows access to a number of "free to view" channels, ie those channels that are encrypted and need a card, but no subsscription. These channels include some ITV1 regions (on freq 12402 and 11973), Irish Channel 4 (on freq 12480), Five, Fiver, Five USA (and timeshift channels), Pick TV, Sony TV, Motors TV, Viva TV, Liverpool FC tv.
Sky Sports is a subscription channel, and is available via satellite from 29.75 per month. Sky SPorts 1,2 and 3 are available 24/7 on small dishes. Sky Sports 4 and SSNews are on a weaker beam, and may not be available 24/7, especially around 5pm when it is weakest, even on big dishes.