once i asked for a glass of water from a hostess standing besides me, and she waved the empty bottle to me ridiculing my thirst.
My conclusion, fly PIA for short journeys, e.g. BWP~LHR/ FSD~LHR/MTN~LHR etc, u'd find pretty hostesses (internee/inexperinced) there but if u happen to travel with them on long routes then Allah hi bachaye esp. on int'l flights