This is quite a packed three day event! You can do it mostly by walking but if you take the subway you will save on the leg power. You must book ahead - online - for Statue of Liberty & Ellis Island, and also Empire State Building too. Otherwise most of your day will be spent in a Queue. Highlights for me were Sandwich Planet and Cupcake Cafe - plus Eve's was a restful oasis in the village. Go shopping but shop wisely!