Happy Hour in South Loop Chicago Happy Hour Food and Drinks Menu VIEW OUR HAPPY HOUR MENU VALET AVAILABLE IN FRONT OF THE HOTEL ESSEX IN THE EVENING, GUESTS ARE REQUIRED TO WEAR UPSCALE CASUAL ATTIRE. ENTRANCE TO THE LOUNGE IS AT DOORMAN'S DISCRETION. AFTER 8PM, ALL GUESTS MUST BE 21 YEARS OR OLDER TO ACCESS THE LOUNGE.