You don't need a disc for the PS Vita. As long as the game (I.e. Madden is in the PS4) you're good to go. I'm only playing with digitally downloads from now on because a physical copy is no longer needed and I don't have to worry about forgetting to have a copy of the disc in the PS4. On a side note, when you use remote play it seems more stable if your PS4 is hardwired. I was able to complete a Madden offseason draft from a hotel with no issues. Enjoy!