Croatian island ferries Split-Hvar-Korcula-Dubrovnik

Looking to book a holiday to Croatia in late June. I want to take a ferry from Split-Hvar-Korcula-Dubrovnik and just wondering a few things about the journey.

-Is there only one ferry town/port on Korcula? We will be coming in from Hvar and want to keep it easy by booking accomodation near the ferry. I did look on the map and it seems there is a port at Vela Lake from Hvar, but also one on the far end of the island that goes direct to Dubrovnik which will be our next stop from Korcula.

-Are there crossings every day from all these destinations? I thought I saw Hvar from Korcula only happened on Saturdays and Tuesdays but then also read the foot passenger catamaran goes everyday. We dont have a vehicle, so a foot passenger catamaran is fine.

-Lastly, can I book all of these crossings online ahead of time or will there be any leg of this crossing that will need to purchased day of?

Thanks so much,

Eve