Can I change my sailing time or date and will this cost extra?

Yes, you can amend your booking before your date of travel, subject to availability. You may incur additional charges due to the difference in fare and these must be paid by debit or credit card at the time of the amendment. If the fare on the new departure is lower than your previous fare no refund will be made for the difference. 

Remember if you have made your booking online, you can amend it online too!