Pressure in a place that cooks fresh food can be a problem. Last year we went one evening and there was a big party of forum and facebook regulars there. We weren't invited to join the party, and the hosts were most apologetic that we'd have a delay.
But, hey - how hard is it to sit opposite a beautiful woman with a glass of wine in the Greek dusk for forty-five minutes dipping pitta into tzatsiki? Demanding food within two minutes strikes me as emblematic of the sad requirement for instant gratification among northern Europeans. Greeks treat food like love - you may have to wait a long time to get it, but when you do it's wonderful.