IllumiNations, Reflections of Earth has not changed since 1999.
I recorded the entire show with six video camera positions around the lagoon in the year 2000.
After personally spending 30 hours, or so, editing the show (picking the best camera angles for each and every scene of the show... scenes last about 3-10 seconds on the screen) I can tell you that I absolutely KNOW that show.
Anyone with professional video editing experience knows what I mean.
Listening and re-listening to every section of the music track, and re-watching video clips over, and over, and over.
I can play that edited recording to this day and see exactly what the show was like then.
The show has not changed in all of those years.
On certain nights, they don't load or fire the "perimeter" fireworks from the lagoon shore,
and they didn't (on certain nights) do that back in 1999-2000, either.
(It likely depends on the wind and/or rain forecast.)
I recorded the show over the course of 4 nights, and on some nights they didn't fire the perimeter effects.
(Yes, even when the show was that new.)
So, when I go to see IllumiNations, Reflections of Earth on recent trips, knowing the entire show as well as I do,
I can tell you that it has not changed in any substantial way.
They used to run the gas torches the entire evening.
More recently (past 5-8 years, or so) they only light them within about a half-hour before show-time.