Most anywhere around the lagoon is good. Most people agree on one thing, try not to be downwind. If you are, the smoke and some fireworks fallout may temper your experience. Also make sure there are one of the several islands in the lagoon between you and the middle of the lagoon.
A favorite area of ours is between the Mexico and Norway pavilions.
We did this 2 years...the first year we almost choked on our drinks when a firework launched from about 10 feet away.....we had no idea they would be that close......My best view was after a well timed dinner at the Rose & Crown, the view from their terrace was perfect.
Should be none of the islands.one of the several islands in the lagoon

Interesting...where is this in Italy?There are a lot of good spots. My absolute favorite is Italy if there isn't a private event being held there. You have a direct view of Spaceship Earth from there and if the MK fireworks are going off at the same time, you can see them too! Norway has a good spot as well.

My parents like the bridge between the UK and France, but I find during the holidays that is usually the direction of the wind. I like the east side of Germany before the African outpost. There are some benches and you can get a beer or a pretzel to have during the show. Also, the location in Germany is about as far from either exit, so it is usually not too packed back there. I usually stay at the Boardwalk, so it is a nice leisurely walk back and I don't feel rushed.