Dazdaz, not that it happens often, but a waitress can call the fire brigade, police, ambulance, security when the sheet hits the fan. Cabin crew can't! Plus, they're working completely irregular shift patterns, often have multiple time zones disrupting their sleep patterns and work at a cabin altitude of 6-8000ft which is far more tiring than working at sea level. With long duty hours, plus sometimes positioning from/to their base airport on top. Yes I would say they do.