When you ask someone about restaurant service in D.C., you’ll get endless opinions. Some will claim that service in D.C. is uniformly abysmal. Others will point to phenomenal experiences — but at a price. Recently, two area favorites have been at the center of service-related discussions: Cleveland Park’s Palena, where local Chowhounds have complained of very slow service, and Arlington’s Ray’s the Steaks, which has policies that at least one local food fan thinks are…