There are so many things I would recommend doing in New York for anyone visiting. These are just a few ideas:-
-Go to Cafe Lalo - there was a scene from 'You've Got Mail' shot there. They have great desserts. They are located at West 83rd Street between Amsterdam & Broadway
-Go to the Met Museum it's wonderful. It's at 1000 Fifth Avenue at 82nd Street.
-Stroll through Central Park, there are so many different things going on there.
-Do a New York City Photoshoot they take you around the City and take amazing pictures of you at famous New York landmarks. Their website is www.nycityphotoshoot.com
-See 'Jersey Boys' I think it is one of the best Broadway shows on at the moment.
Hope this list is useful for anyone visiting New York.