Speaking onboard the ship today, Cahill said vandalism to the plumbing and wiring in the new cabins were the reasons the cabins were not ready when the ship left dry dock after its $155 million refit in May.
Cahill wouldn't say who caused the damage but implied it happened at the Fincantieri shipyard, where the ship was being transformed from Destiny to Sunshine.
Cahill said: “It was a complicated process and certain things happened that we really could not have predicted.
“The new block of cabins that we added on -- there was a lot of vandalism that was done.
“Normally we get crew to stress test new cabins, but these cabins were only delivered to us the day before they were fitted, so we did not have time.”
He added: “It didn't start off how we wanted. We felt very badly about that. There were so many [managers] onboard [that first sailing] and we were all trying to work out those problems, so it was not a good start and we wanted to do right by our guests.
“But the ship is in great shape now and all those problems have been sorted out.”
Cruise Critic members reported a number of issues with the ship's first sailing after dry dock including faulty plumbing, no running water, leaks and no lighting in the new cabins.
Cahill also explained the flooring on the WaterWorks area had not been fitted when the ship left dry dock because of poor weather in Italy, as has been previously reported.