In a statement on the Carnival Cruise Lines website, Gerry Cahill, President and CEO of Carnival Cruise Lines said: "We know it has been a longer journey back than we anticipated at the beginning of the week under very challenging circumstances.
"We are very sorry for what our guests have had to endure. Therefore, in addition to the full refund and future cruise credit already offered, we have decided to provide this additional compensation. I look forward to welcoming everyone to Mobile."
More top news
Indian company Tata Steel have announced that they have completed the sale of their European business - to Greybull Capital.
The new X Factor judging panel has been revealed - and three familiar faces are making a comeback.
The cousin-in-law of Mexican footballer Alan Pulido - kidnapped and rescued over the weekend - is suspected of playing a role.