My family of four, kids 23 and 19, opted to stay away from the parks on NYE. I booked a 8 pm ressie at the Boathouse and told the
waitress that we were going to stay through the new year. She paced our dinner perfectly, we had drinks, food, drinks, and then about
11:30 pm, they started giving out hats and blowers. We paid, left our table and went to the bar area and had a really perfect night.
There were many people in DTD but not enough where it was a madhouse and just the right amount of people at the Boathouse.
We were staying in THVs in SS so that helped us choosing where we wanted to spend NYE since it was just going to be a walk/boatride
back to our place.
I think the first thing you need to do is decide if you want to be in a park and then work from there. I almost chose us to be in a park and
if I didn't choose DTD, it would have been Epcot.
Have a great time!