Las Vegas weddings could hit record on New Year’s Eve thanks to date’s 1-2-3 pattern New Year’s Eve could take the cake for the busiest wedding day in Las Vegas thanks to the date’s repeating pattern of 1-2-3, 1-2-3. Dec. 31, 2023 is known as a specialty date in the massive Las Vegas wedding industry. Source: Las Vegas weddings could hit record on New Year’s Eve thanks to date’s 1-2-3 pattern | AP News