1. Allowance only on night stops, as food onboard is free. I had to pay for it in my old airline.
2. No clue how much allowance I get, as it is spent down route, and as said often not enough. It is calculated based on the discount EK can get in the hotel. Outside the hotel you are on your own budget if you want a proper meal.
3. Overtime is based on hours spent onboard the aircraft, nor behind the yoke.
4. I deadhead about once a year!