The trip out is one night , starting with the spectacular not to be missed sail down the Hudson and out into the harbor, passing Manhattan, Statue of Liberty and under Verazano Bridge. You have one full sea day ( pool , sun etc, ) and one more evening.
Then you have 3 1/2 days and nights in the best cruise destination in the world. So as not to repeat myself, go over to Destinations "other" and read the thread where I mention just a few things to do in Bermuda. Then you have an evening , sea day , another evening and you are home. Plenty to do on Horizon , one of the nicest little ships out there.
So much to do in Bermuda you'll have to go back again next year on Zenith.
We cruise twice a year and if totally up to me (Mrs Bill usually chooses destinations)
I would go once a year to Bermuda on Celebrity.