Marquee Dayclub turns its Halloween weekend into a sun-soaked pool party with DJ Stephi K taking over the decks. Expect the usual mix of splashing around in the pools, lounging in cabanas, and dancing to house and dance music while the desert sun beats down. The Cosmopolitan's iconic dayclub setup means there's plenty of room to move between the bars, gaming tables, and pool decks, all while soaking in whatever costumes and Halloween energy the crowd brings to the party.

Given the holiday timing, don't be surprised to see some festive costume touches mixed in with the usual dayclub attire of swimsuits and sunglasses. The infinity-edge cabanas remain the go-to spot for anyone wanting a more private slice of the action, complete with their own dipping pools and dedicated service, while general admission keeps things open for anyone who just wants to wander the space and catch the music.