Alot wor , mai siao siao hor
They even gotch dedicated centers or academies on teaching all the etiquette of bcuming one
If chiu notch from lich family or notch lich taitai , one way of getting the "dream" of travel the world accomplished while earning a job ish bcum cabin crew
Only pros, it will take a toll on chiur health/body over time due to the "irregular" timings of chiur schedule
Thats why its better to do it while chiu young (early - late 20s) and mostly maximum will only do 7-10 yrs , those who can still tong after that of cos will do longer if they interested