We are departing Livorno on ferry for Corsica at 8 am on Sun Apr 29. Will be in Corsica 5 days. We must find SECURE parking near the ferry port for our rental car. The ferry company Corsica Ferries will only tell us that "near the harbour there is a car parking" but no details about where or if it is attended or secure. Since it is Sunday we assume the rental car agency is closed so they will not be able to help. Thanks for any info.