At least one of the Kefalonia Dive Centres has opted out of this junket.
The Skala one, based next to AB Supermarket is involved.
Also based on the other side of AB is a "new this year" Cafe Bar called Perseus, after the submarine. Their menu has the story of the sinking and the rescue of John Capes on it's back page. The establishment is run by the grandchildren of Evangelos Thomatos who helped take care of John Capes during his time of the Island.
( I hope you don't treat this as an advertisement Maik)