Yes, that will do. The fireworks will, when launched, write "Happy Holidays -- Christmas, Hanukkah, Festivus, Solstice Or Just Happy Days" across the sky. They'll exit through the hole in the roof and everyone will be able to see them. The various star clusters and balls should add grace notes.

Tough to set up, though.

And he drinks another Afterburner while idly fingering the detonator.