Little more info / updated on questions No. 3 & 5
3. As of now until June 2009 can't request to move out of the compound.
"The Provision of Company Accommodation to employees is a benefit extended by Qatar Airways. It is therefore the prerogative and sole responsibility of the Company to decide whether to provide suitable accommodation or to pay HRA."
5. You will only get to go for training in the UK if they are really backup on
training or the simulator is broken.