There's a problem with debit cards when they take a swipe and block a sum on check-in. On a credit card, the transaction regarding the extra blocked amount is simply cancelled but a debit card is charged that amount, say $500, and then refunded which can take a few days and also attract commission. We were warned by a hotel not to use debit cards for this reason and some hotels have a warning notice on reception. Enjoy the trip! The Staten Island ferry is a very cheap way to see the skyline, it used to be free in one direction and a pittance in the other.The best rates are currently through the DT Moneycorp site.