DayZ PS4 Noob Question

  • I recently prepaid a 90 day server for DayZ on PS4 and its my first time ever getting one for me and my friends. I went thru the normal pre order selection pages for that game, and now it is just sitting as an account credit in general not associated with DayZ. I realize its not going to be available until the coming 1.04 update, but will it automatically bill my account and I get a DayZ server as soon they are available? Or do I still have to come back and use the account credit to manually purchase one of those specific servers? again? Thanks in advance for any info.