Welcome to Over50sForum! The site for people over 50 to chat, make friends, discuss, share, and generally be part of something that's fun and friendly :)
Only five days but will be with a group and involved with group activities but I'm told there will be some free time and some outings will be organised - not sure when or where.
I will start another thread on my return. Things to do and don't in NYC.
No visa is needed only an ESTA.
Do it online, ours were instant, and they last two years.