To truly capture the essence of Byron Bay, 3 to 4 days is generally considered the "sweet spot." A three-day itinerary allows for the essentials: one day for the iconic Cape Byron Lighthouse walk (where you can see the easternmost point of mainland Australia and spot whales/dolphins), one day to enjoy the beaches and take a surf lesson, and a third day to explore the hinterland, including Crystal Castle or the town of Bangalow. If you stay for a fourth day, you have time for "Byron time," which means slowing down to enjoy the vibrant café culture, browsing the local boutiques, or taking a day trip to the hippie enclave of Nimbin. While you can see the main sights in 48 hours, the town's famous "Cheer Up, Slow Down, Chill Out" motto is hard to follow if you are rushing. Staying longer allows you to move past the tourist surface and experience the wellness and artistic spirit that made the town famous before it became a celebrity hotspot for the "Hollywood of the North."