Lāʻie sits on Kamehameha Highway on the windward side, between Kahuku to the north and Kaʻaʻawa to the south. There are two routes from Waikīkī and they are close enough in time that traffic decides it.
The windward route — H-1 to the Likelike or the H-3 through the Koʻolau tunnels, then north on Kamehameha Highway past Kāneʻohe, Kualoa and Kaʻaʻawa. Slower in miles, prettier by a distance, and it passes Kualoa Ranch and Byodo-In if you want to stack them.
The central route — H-1 to H-2 north through Wahiawā, past Dole Plantation, down the hill to Haleʻiwa, then east along the North Shore through Waimea, Sunset and Kahuku. Allow extra for the Haleʻiwa bottleneck, which is a genuine constraint in the afternoon.
Either way, plan on roughly an hour and a quarter each way without incident, and more on a Friday. TheBus route 60 serves Lāʻie from Honolulu and Haleʻiwa, but it is a long ride and it will not get you home after a night show.
Parking is on site and free with admission.