A majority of the CH are from Emirates ,Etihad,and some from Qatar/Qatari Royal Flight - They are well trained and great to work with !
Normally you do your 17 days and then fly home (to be home on the 17th day) very rarely do you have to extend, then only if you want or agree to?
You do work very hard on all the fleets especially the Globals (30+ Globals), and the hotels do vary. Last rotation I did We stayed in Marriot (Marina del Ray), Crowne Plaza (Dubai), Omni Reorts (Boston), Marriot (Mumbai) - they are not that shabby really ?