First, cover the background and the events of the Feast of Booths (the celebratory nature, the ‘booths’, the daily water pouring, etc.)
Background on Zechariah 14: Zechariah is talking about the Day of the Lord, when nations rise up against Jerusalem. In the end, “living waters shall flow out from Jerusalem” (v. 8) and “the Lord will be king over all the earth” (v. 9). Then:
Zechariah 14:16 ESV
16Then everyone who survives of all the nations that have come against Jerusalem shall go up year after year to worship the King, the Lord of hosts, and to keep the Feast of Booths.
