Where would you put the crew you had to leave behind? How would you feel if you were the guest that the captain said had to stay behind because you had sniffles, and how would the vessel operator shift the massive costs of such a decision to the guest who brought the sickness on the boat?
Shoe on a different foot. You come on the boat and get sick. No one in the crew is sick until your last day, and everyone in the crew gets it. Now, the Captain and owner says to you "You got the crew sick, and we have to cancel the next trip. Direct loss of revenue is $35,000, and refunding everyone's airfare on the next trip will cost an additional $18,000. Please write a check for $43,000 to compensate for the losses while we sit in port and get healthy.
Or doesn't it work that way?