In its early years, the Rainbow Room had a difficult time attracting just the right types of customers. "Fortune" magazine described the Rainbow Room's intended audience as "the nonflashy strata of the upper crust" who avoided such nightclubs as Stork Club or El Morocco. The restaurant attempted to draw the rich and famous by hiring unorthodox entertainers, including monologists and impressionists. There were many high expectations for the Rainbow Room, which was among the first restaurants with air conditioning, as well as one of the first clubs to open after the 21st Amendment's ratification. The restaurant had a net negative profit in 1936, but Rockefeller Center Inc. used the publicity from Rainbow Room to advertise Radio City, the western half of Rockefeller Center. By the end of the decade, the Rainbow Room and Grill were described as being "two of the most successful clubs in the country." In summer 1941, the Rainbow Room recorded its largest-ever profits. "The New York Sun" described a typical Saturday as "almost like New Year's Eve": the Rainbow Room served 575 diners a night despite only having 350 seats, and the Rainbow Grill served another 312 diners per night.