The Ultimate Fighting Championship returns to Las Vegas for its traditional Fourth of July Weekend event, and has once again instituted UFC Fight Week in Las Vegas. This year’s festivities center on UFC 162: Silva vs. Weidman , which takes place Saturday at the MGM Grand Garden Arena and airs live on pay-per-view. UFC Fight Week includes a week-long schedule of events that includes open workouts, the UFC 162 pre-fight press conference and weigh-ins, parties, concerts, the UFC Fan Expo, and more. UFC Fight Week 2013 Schedule of Events WEDNESDAY, JULY 3   1 p.m. UFC 162 Open Workouts , XS Nightclub inside Encore at the Wynn (free and open to the public) THURSDAY, JULY 4 11 a.m. UFC 162 Pre-fight Press Conference, MGM Grand main lobby (free and open to the public) 1 p.m. Pool Party at Liquid at Aria ($10 for women front-of-line admission; $20 for men) 6 p.m.