Based on 2 Ionian Ferries Reviews
Zakynthos to Killini with Ionian Ferries
If you buy your tickets ahead of the trip you need to pick them up at the Ionian offices in Zakynthos. Lovely trip about 1 hour long.
Killini to Kefalonia/Argostoli with Ionian Ferries
Our kids loved the adventrue of setting sail for the island for an overnight beach adventure during our camping trip to Greece. The ship is basic, but what do you need for such a short crossing!? Scenery was stunning!