Nats Park on a 95+ day may be no fun, but one's real heat endurance was tested severely at RFK - especially back during the first season when the stewards took everyone's water off them until the DC health authorities called them off - until then the only way to get water was to waste an inning (or more) on a food queue. But water or no water, the place was a sauna - as Casey Stengel said of old Busch Stadium when it hosted the ASG in 1966: 'It holds the heat well' (now the concourses did provide some cross-ventilation at times but one could not see the match from many areas thereon).