The first commercial sunset sail out of Waikiki launched in 1978, a year after the city rezoned the shoreline to permit low-impact leisure vessels. What began as a handful of mono-hull charters has grown into a nightly flotilla of catamarans, each carrying sixty to ninety passengers who gather along the beach an hour before dusk. The catamaran design — twin hulls connected by a wide trampoline deck — became the standard by the mid-1980s, offering stability in the afternoon trade winds and enough deck space for standup bars, DJ booths, and open seating. Waikiki's westward orientation places Diamond Head directly to the southeast and the Waianae Range across the channel to the west, so every sunset cruise departs into open water with the volcanic crater framed behind you. The typical route follows the coastline south for twenty minutes, then arcs northwest past the reef break at Ala Moana before turning back toward shore. Most operators hold position offshore during the final thirty minutes, when the sun drops behind the mountains and the sky cycles through amber, rose, and violet. The booze cruise format varies by operator. Some vessels operate a cash bar stocked with domestic beer, vodka, and rum; others include an open bar in the ticket price, serving mai tais, margaritas, and local craft lagers. A handful of cruises permit BYOB, allowing passengers to bring coolers aboard at no extra charge. Live DJ sets are standard on the larger party-focused vessels, while smaller catamarans favor acoustic sets or recorded playlists. A few operators include a swim stop in deeper water beyond the reef, where passengers can step off the trampoline into seventy-eight-degree ocean while the boat idles. The Waikiki booze cruise sunset experience has remained largely unchanged since the 1990s, aside from stricter alcohol service protocols introduced in 2018 and a shift toward online ticketing. Departures run year-round, seven days a week, with the 5:30 pm window accounting for eighty percent of sailings. Check-in happens on the sand; most operators require passengers to wade through shallow water to board from a tender or directly onto the catamaran's stern ladder.