We were there thru around the 12th last December and the only “fireworks” (or night time show) at HS then was Fantasmic! The Symphony of the Stars didn’t start until just prior to Xmas. Things may be radically different this year given the success of the Star Wars fireworks. Plus the lack of the Osborne lights may change HS around Xmas as well…
Basically I’m not sure I’d trust last year as a guide given how different the park and evening shows are now due to SW fireworks plus no Osborne lights…