Since Disney is so fond of sneak peeks, they're showing a 5 minute sneak peek (basically Olafs song from the short "That time of year") prior to each performance of Frozen-Live at the Hyperion for the holidays. The preview begins approximately 10 minutes prior to showtime.
https://disneyparks.disney.go.com/b...dventure-at-disney-california-adventure-park/
https://disneyparks.disney.go.com/b...dventure-at-disney-california-adventure-park/