So I could write a novel on the different ebbs and flows of Poly fireworks music. Over the years the quality and volume of the music has varied.
In more recent times, they have had the audio around the main beach in front of the Hawaii longhouse dialed in really well. Not long before closing they had installed some new speakers at the waters edge and it was fantastic audio quality from Hawaii.
I have also been there when a lightning strike took out audio all over and it wasn’t a great show.
But generally speaking I’ve been impressed with the audio level in more recent times. Note, I have not been since they restated fireworks so I’m speaking from pre Covid experience, not current.
Tuvalu will be different. Maybe some OK audio for the far end rooms, but I wouldn’t bank on that being as good a show than being out on the beach.