The Cosmopolitan of Las Vegas. Jay-Z is scheduled to perform alongside Coldplay and his wife Beyonce. The party is suppose to be a star-studded affair with only 2,500 invited guest. It has been rumored that Jennifer Lopez, Marc Anthony and Alex Rodriguez will be in attendance. Staff at the Cosmoplitan shared that a special performance will take place on the pool's deck, which overlooks the Las Vegas Boulevard sometime during the New Year's Eve weekend.