Tickets can be purchased online for the match here:
https://pinatararena.compralaentrada.com/eventos/15911/16452
TV passes to watch online can be purchased here:
https://tv.cardiffcityfc.co.uk/videos/subscriptions
Southend will start the new season in the National League again after losing the play off final at Wembley against Oldham Athletic.
This match is Cardiff's second and final fixture in Spain after a week of warm weather training (they could have stayed home, it's boiling here in South Wales).
Kick off 6pm UK time.