Let me preface by saying that I am new here. I have attempted to find the answer to my question by searching through the different boards. However I haven't seen what I am looking for covered anywhere else.
Is there a comprehensive list of the different methods of accesing different airport lounges, either by alliance, by operating airline, or as a last resort even by paying cash to access.
The lounge I need information on is any Lounge in ATH. There are a couple of them operated by Aegean, and one operated by Lufthansa.
Any help would be much appreciated, and maybe this can be the beginning of a list that everyone can benefit from.