We had such a great day on this tour, saw well more than we thought we would and learned more than we thought possible. I think our day was about 5.5 hours total, not including our transportation to/from our hotel. It is definitely a lot of walking, I would recommend bringing some snacks/water in a backpack as other than snacks on the ferry you won't have a chance to get anything to eat. The best pictures of the Statue of Libery and NYC Skyline are of course on the ferry - so plan for that. People rush to find a seat on the ferry, but you may as well stay out on the deck so that you can take pictures. Tip your guide! I noticed other patrons didn't tip or didn't tip much and I thought that was super rude - TIP!!!