Yes, some do, but not many. JWs don't need to wait till New Years to get bombed. Many used the conventions as an occasion to gather and drink to excess.
Side points, have you every wondered why the service year of the WTS starts September 1 but they observe the calendar year changeover in other things, such as the changing of times for congregations sharing a KH?
BTW, there is nothing intrinsicly wrong with fireworks. I have been to places such as Disney World and watched firework displays there. But then I know JWs that watch the fireworks for Independence Day festivities and then known others that disappear into the basement w/o windows to avoid a chance glimpse.
Blondie