Regulation (UE) n. 1177/2010 governs the rights of passengers transported by sea or on inland waterways, obliging carriers to provide certain information and specific rights in the event of delays, cancellations and changes of itinerary. The full text of Regulation (UE) n. 1177/2010 and further information on passenger rights can be found at these links:
In order to be able to assess, in accordance with Regulation (EU) 1177/2010, any claims for reimbursement of expenses (e.g. hotels, dinners, etc.), it is necessary to present the carrier with the relevant receipts proving the costs incurred.