We stayed at WL (well, we always do, we're DVC) over NYE 2019. We rang in the NY in MK watching fireworks at the dessert party. Once over, it was crazy getting out. Thankfully, only had to get to the boats. Once on the boats, you can see cars on the main roads trying to get out. The person driving the boat said 80,000 people were in MK in NYE that night. And that last year it took some people 8 hours to just get out of parking lot. Stay at the hotel closest to where you plan to be on NYE.