Rekordbox subscription with DDJ1000 - advice please!

Hi

I've just purchased a new DDJ1000. Can someone explain the situation with Rekordbox subscription? The DDJ comes with a serial number for Rb but I've read that it's not needed for version 6 (i wasnt asked for it when downloading Rb) and I just need to connect the DDJ and Rekordbox access is available? But does this only give me access to the basic plan; surely I don't need to subscribe and pay £10 per month for Core?

Thanks