Thanks for all kind revert, in this case i might as well purchase on the day itself, Any notable area in NY worth visiting ?
If you have the time take the full day tour,it's free and tips based. You will see the main sights. No visit is complete without Times Square and the Wall St area. I like the Central Park area, a good refreshing change from the city. Also the Soho area

explains why it's so crowded whereas most Singapore museums (excluding ArtSci Museum) are empty!