I suppose there could be some ships that have to cancel if their ports of call are not available, so you may have something.
Aren't there cruises that go to and from NO, also. Wonder what's happening with that...
I live right on the Houston Ship channel (Galveston Bay) I will report if shipping increases as I think it must. All those ships will have to go someplace. Ship waves are cool, I'll have to break out my little rubber raft and ride a few.