1 OAK Southampton (24 Tuckahoe Lane, Southampton, www.1oaksouthampton.com) is celebrating Scott Disick’s birthday on Saturday, June 21, 2014. It will be a belated party for Kourtney Kardashian’s partner, who turned 31 on May 26. The evening will feature music by DJ Kiss.
Finale East (44 Three Mile Harbor Road, East Hampton, 212-627-1235, emmgrp.com) will have Sinatra on Saturday night.