Okay, so maybe a couple of months behind you, but I've been thinking about this for yonks!
I too am booked on the Breakaway for 2014 (5 jan though not the 4th!!?). There weren't any studio rooms available on the 5th or the 19th, so I've blown my budget and gone for a Balcony (on the plus side it means I can wake up to see the sunrise in a new port, without having to leave the room)!
I live in the UK but shall be spending xmas with my mother in AZ before heading to NYC. Am planning on spending two days sightseeing before the cruise too so if you have any tips for me (last time I went I was ten years old on a school trip!), let me know what's best. I've always fancied a buggy ride around Central Park but don't fancy it alone so may have to shop instead!! Lol
It maybe a fair way away but it's funny, I'm already Really excited! I've never been on a large cruise ship either...