I applied for the required PLF. I received this response. Just a heads up.
Thank you for completing the Passenger Locator Form before your trip to Greece. We appreciate your cooperation in this extraordinary circumstance. We are making every effort to accommodate your stay in Greece and keep you safe.
Beginning July 1, 2020, the Greek government has determined how the country will welcome travellers, carry out the necessary diagnostic screening, and keep everyone safe throughout the season.
Important: You will receive the PLF document with the QR code on the day of your scheduled arrival in Greece (at midnight). You will be notified again via email and this URL will be automatically updated. The PLF document is only valid with the QR code. If travel departure begins prior to the day of arrival, travelers are allowed to board after showing the confirmation email (and not necessarily the QR code which is scheduled to arrive during their trip).