A now co-worker was a magician for NCL about 20 years ago. Some weeks he would be on the same ship all week and others he would change ships mid cruise if there was another NCL ship in port. He said there were times when he might leave say Miami on ship A, transfer to ship B, and then return to Miami on ship C. He said it was always a challenge when changing ships if one or both were at tender as he had to move all his props in a huge trunk or two along with his clothes and costume. Luckily that didn't happen to often.