To avoid Preveza, I decided to ride the longer - but supposedly also nicer - way along the coast. Afterwards, I had to navigate a 2k tunnel clearly signposting that bikes were not allowed but there was alternative, unless taking a 100k detour around a big inland sea. I took the chance and when entering the tunnel I heard a Greek voice in the speakers, but when I got to the toll both, I was told to continue - no problem and no payment...