We’ve been to the Luau and the show is good. But for a free mini-show, be at the front of the Polynesian Resort’s main building near dusk (call the resort to find the actual time): One of the performers from the show - a fire-twirler - puts on a little show and then runs through the resort’s grounds, “lighting” the tiki torches throughout. While you’re there, stroll across the grounds (very nice) and along the sandy shore next to the lagoon.