We have been there for NYE for the past 3 years. We never go to MK because it has closed to all guests by 10am and its wall to wall. Last year we started out at DHS, left in afternoon relaxed at Dolphin(checked in just for NYE after 4 night at OKW) ate dinner at Kouzinna hung around BW area and watched midlnite fireworks from BW area at Epcot and DHS then back to our room before most folks hit the parking lot. 2 years ago we started at DHS then entered Epcot at 4pm via IG and had dinner at Japan..lots of fun lots of outdoor activities. 3 years ago we spent whole day at DHS dinner at BD, last Fantasmic show then took boa back to Swan just before midnite and watched same fireworks at Epcot and DHS from there. Make ADRs right at 180 days. Plan on not being able to park hop if doing MK(don't make adr at resort and plan on returning); you cannot reenter if they reach max capacity even if you have adr in park. It has been ok for us to park hop between epcot and DHS, don't know if its always the case. It is very crowded and noisy everywhere(hat and noise makers all around). Its not a time to do attraction, but take in the holiday stuff.that's my opinion. Lots of stuff going on at BW area also that we did this year.
Connears
This year we leave on OKW 12/30(after four nights) and head to HHI for NYE on the way back to Boston.