We had been warned that there may be a possible terror attack somewhere in New York but we both felt that we just needed to be out in the city, to be with others.
At the moment, if you want to view the 9/11 memorial you need to make a booking. I definitely plan to go down to the site and pay my respects however I am going to wait for a while before I do. I will definitely let you know what the site is like.