Kourtney Kardashian is set to have her birthday celebration at 1 Oak Nightclub in Las Vegas. The birthday party is scheduled for Saturday, April 18, 2015 inside the Mirage Hotel & Casino. Music at 1 Oak will be provided by DJ E-Rock. For big celebrations like this you can be sure there will be plenty of other celebrities out partying with Kourtney Kardashian. You don't need a Las Vegas promoter to attend this event, simply hop on the No Cover Nightclubs guest list.