I’d avoid this area if you had a car. Can’t speak about the WDW busses but even an average weekend night the traffic and parking is awful. New Years would be horrible traffic here.Also it probably is the worst for traffic. People tend to go to the parks and stay there all day so traffic around the parks is not awful after the noon hour but DS gets people coming and going all day long, the parking is free so lots of locals head there to celebrate even if there aren't any fireworks happening. If you're staying on site there is a dedicated bus lane reserved for resort buses but only for a short portion of travel