Originally Posted by threeoh

Trip Delay will pay for your hotel/meals/taxis while you wait out a delay. New expenses only, but no onward travel.

Trip Cancellation/Interruption reimburses you for things you miss for a covered reason. It doesn't cover new expenses (rare exceptions like change fees). Does not cover price of any new tickets under any circumstances. If you had completely missed your cruise it would probably covered the cancellation fee or no show fee for the cruise.

No Chase coverage pays for new tickets.

Read the wiki, a lot is explained there!