TBH, don't stress about seeing the show if the fireworks are your priority. If you want a good view of the fireworks, Deck 12, starboard side, between the railing and the stack of chairs across from the forward funnel. We heard the stage show just fine (probably better than most since we were behind the very loud speakers, we watched the performers run on and off stage since they come on and off through a door in the funnel, we had a front row view of the fireworks with no one in front of us and very few people close by and were able to make a quick escape to the forward elevators. Most of the main pool deck and upper rim were pretty full before we got there. It was just my wife and I and we had second seating.