MK, but the Studios will have Mulch Sweat and Shears doing sets on stage along with a DJ. But be prepared, it WILL be crowded. Do not expect to hit a lot of rides, go for the night stuff and get there early. Soarin had a 4 and a half hour wait.
IMO, neither. Epcot's are the very best. First, MK is ALWAYS crowded and always fills to capacity by noon on NYE. Plus at Epcot there are so many good spots to see the fireworks. They also shoot off fireworks over each country in the order that they entered the New Year. As well as bringing out what is affectionately named the world war 3 barge. Its huge and the finale literally lights up the ENTIRE sky. Its the most amazing this I have ever seen
I was at DHS last year on 12/22 for the last day of my trip. That put me off ever showing up on or near a holiday. The week before is great. The week after is probably great. The week of seems like a nightmare. (IMHO)
I would suggest going to Epcot for New Years Eve. Its a large park so the crowds are a little more spread out. They have a amazing fireworks show for NYE. Just get there early and get your fast passes early. Do what rides you can with the fast pass. Then maybe visit areas that you may have never been or haven't been in a long time. There are a lot of areas to view the fireworks from. I suggest around any country you may like to drink alcohol in. My spot is Mexico. Good spot and good Margaritas . Where ever you decide just get there, don't stress and enjoy.
we are staying at the boardwalk so the crowd is not going to be an issue for us. We've done New Years before and we were at MK. We thought we experience another park....so we are thinking HS due to the entertainment and we have a dinner reservation there too.