If you don't have reservations yet, you may find yourself out of luck. We have been to WDW during NYE week for tha past 2 years and NYE is sold out at the resorts(many native FLA come for the night). That said, you could go to Boardwalk for non-park NYE actvities, but many of the sitdown restaurants have been booked since the 90 days mark(if you try for PS they will take CC# because it is considered a holiday). You can see the fireworks at MK from the beach at the poly and the fireworks at Epcot from Boardwalk area(MGM fireworks from the Swan). Just some thoughts.
Connears